399113910 has 48 divisors (see below), whose sum is σ = 1117522224. Its totient is φ = 98243136.

The previous prime is 399113899. The next prime is 399113927. The reversal of 399113910 is 19311993.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 169392 + ... + 171731.

It is an arithmetic number, because the mean of its divisors is an integer number (23281713).

Almost surely, 2^399113910 is an apocalyptic number.

399113910 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

399113910 is an abundant number, since it is smaller than the sum of its proper divisors (718408314).

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

399113910 is a wasteful number, since it uses less digits than its factorization.

399113910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341149 (or 341146 counting only the distinct ones).

The product of its (nonzero) digits is 6561, while the sum is 36.

The square root of 399113910 is about 19977.8354683384. The cubic root of 399113910 is about 736.2618335798.

The spelling of 399113910 in words is "three hundred ninety-nine million, one hundred thirteen thousand, nine hundred ten".