399707808912 has 60 divisors (see below), whose sum is σ = 1118868489024. Its totient is φ = 133207139520.

The previous prime is 399707808887. The next prime is 399707808937. The reversal of 399707808912 is 219808707993.

It is an interprime number because it is at equal distance from previous prime (399707808887) and next prime (399707808937).

It is a self number, because there is not a number n which added to its sum of digits gives 399707808912.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 373837 + ... + 969107.

Almost surely, 2^399707808912 is an apocalyptic number.

It is an amenable number.

399707808912 is an abundant number, since it is smaller than the sum of its proper divisors (719160680112).

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

399707808912 is a wasteful number, since it uses less digits than its factorization.

399707808912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599948 (or 599939 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 63.

The spelling of 399707808912 in words is "three hundred ninety-nine billion, seven hundred seven million, eight hundred eight thousand, nine hundred twelve".