199999060 has 24 divisors (see below), whose sum is σ = 431350920. Its totient is φ = 77837184.

The previous prime is 199999057. The next prime is 199999061. The reversal of 199999060 is 60999991.

It can be written as a sum of positive squares in 4 ways, for example, as 10771524 + 189227536 = 3282^2 + 13756^2 .

It is a junction number, because it is equal to n+sod(n) for n = 199998989 and 199999007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199999061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134395 + ... + 135874.

It is an arithmetic number, because the mean of its divisors is an integer number (17972955).

Almost surely, 2^199999060 is an apocalyptic number.

199999060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199999060 is an abundant number, since it is smaller than the sum of its proper divisors (231351860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199999060 is a wasteful number, since it uses less digits than its factorization.

199999060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270315 (or 270313 counting only the distinct ones).

The product of its (nonzero) digits is 354294, while the sum is 52.

The square root of 199999060 is about 14142.1023896732. The cubic root of 199999060 is about 584.8026314489.

The spelling of 199999060 in words is "one hundred ninety-nine million, nine hundred ninety-nine thousand, sixty".