404139312 has 60 divisors (see below), whose sum is σ = 1167526464. Its totient is φ = 130366080.

The previous prime is 404139311. The next prime is 404139347. The reversal of 404139312 is 213931404.

It is not an unprimeable number, because it can be changed into a prime (404139311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40803 + ... + 49730.

Almost surely, 2^404139312 is an apocalyptic number.

It is an amenable number.

404139312 is an abundant number, since it is smaller than the sum of its proper divisors (763387152).

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

404139312 is a wasteful number, since it uses less digits than its factorization.

404139312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90578 (or 90569 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 404139312 is about 20103.2164590645. The cubic root of 404139312 is about 739.3391421604.

The spelling of 404139312 in words is "four hundred four million, one hundred thirty-nine thousand, three hundred twelve".