399980912 has 40 divisors (see below), whose sum is σ = 800282112. Its totient is φ = 193536000.

The previous prime is 399980909. The next prime is 399980923. The reversal of 399980912 is 219089993.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80912 + ... + 85712.

Almost surely, 2^399980912 is an apocalyptic number.

It is an amenable number.

399980912 is an abundant number, since it is smaller than the sum of its proper divisors (400301200).

399980912 is a wasteful number, since it uses less digits than its factorization.

399980912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4977 (or 4971 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 50.

The square root of 399980912 is about 19999.5227943069. The cubic root of 399980912 is about 736.7945794094.

The spelling of 399980912 in words is "three hundred ninety-nine million, nine hundred eighty thousand, nine hundred twelve".