399239910630 has 96 divisors (see below), whose sum is σ = 1171437564960. Its totient is φ = 93447997440.

The previous prime is 399239910577. The next prime is 399239910631. The reversal of 399239910630 is 36019932993.

It is a happy number.

399239910630 is a `hidden beast` number, since 39 + 92 + 399 + 106 + 30 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399239910631) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6924267 + ... + 6981686.

It is an arithmetic number, because the mean of its divisors is an integer number (12202474635).

Almost surely, 2^399239910630 is an apocalyptic number.

399239910630 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

399239910630 is an abundant number, since it is smaller than the sum of its proper divisors (772197654330).

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

399239910630 is a wasteful number, since it uses less digits than its factorization.

399239910630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13906006 (or 13906003 counting only the distinct ones).

The product of its (nonzero) digits is 2125764, while the sum is 54.

The spelling of 399239910630 in words is "three hundred ninety-nine billion, two hundred thirty-nine million, nine hundred ten thousand, six hundred thirty".