404865312 has 48 divisors (see below), whose sum is σ = 1064200032. Its totient is φ = 134773760.

The previous prime is 404865311. The next prime is 404865313. The reversal of 404865312 is 213568404.

It is an interprime number because it is at equal distance from previous prime (404865311) and next prime (404865313).

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (404865311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82183 + ... + 86969.

It is an arithmetic number, because the mean of its divisors is an integer number (22170834).

Almost surely, 2^404865312 is an apocalyptic number.

It is an amenable number.

404865312 is an abundant number, since it is smaller than the sum of its proper divisors (659334720).

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

404865312 is a wasteful number, since it uses less digits than its factorization.

404865312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5681 (or 5673 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 404865312 is about 20121.2651689699. The cubic root of 404865312 is about 739.7815961260.

The spelling of 404865312 in words is "four hundred four million, eight hundred sixty-five thousand, three hundred twelve".