399758162672 has 40 divisors (see below), whose sum is σ = 845927345280. Its totient is φ = 181496652480.

The previous prime is 399758162669. The next prime is 399758162729. The reversal of 399758162672 is 276261857993.

It is a junction number, because it is equal to n+sod(n) for n = 399758162599 and 399758162608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1170908 + ... + 1473275.

It is an arithmetic number, because the mean of its divisors is an integer number (21148183632).

Almost surely, 2^399758162672 is an apocalyptic number.

It is an amenable number.

399758162672 is an abundant number, since it is smaller than the sum of its proper divisors (446169182608).

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

399758162672 is a wasteful number, since it uses less digits than its factorization.

399758162672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2645061 (or 2645055 counting only the distinct ones).

The product of its digits is 68584320, while the sum is 65.

The spelling of 399758162672 in words is "three hundred ninety-nine billion, seven hundred fifty-eight million, one hundred sixty-two thousand, six hundred seventy-two".