399951412 has 24 divisors (see below), whose sum is σ = 827487360. Its totient is φ = 165496800.

The previous prime is 399951407. The next prime is 399951427. The reversal of 399951412 is 214159993.

It is a super-2 number, since 2×399951412² = 319922263921587488, which contains 22 as substring.

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, 245464 + ... + 247087.

It is an arithmetic number, because the mean of its divisors is an integer number (34478640).

Almost surely, 2^399951412 is an apocalyptic number.

It is an amenable number.

399951412 is an abundant number, since it is smaller than the sum of its proper divisors (427535948).

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

399951412 is a wasteful number, since it uses less digits than its factorization.

399951412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492591 (or 492589 counting only the distinct ones).

The product of its digits is 87480, while the sum is 43.

The square root of 399951412 is about 19998.7852631104. The cubic root of 399951412 is about 736.7764652330.

The spelling of 399951412 in words is "three hundred ninety-nine million, nine hundred fifty-one thousand, four hundred twelve".