404371972 has 12 divisors (see below), whose sum is σ = 710588956. Its totient is φ = 201346560.

The previous prime is 404371949. The next prime is 404371999. The reversal of 404371972 is 279173404.

It can be written as a sum of positive squares in 2 ways, for example, as 139854276 + 264517696 = 11826^2 + 16264^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208773 + ... + 210700.

Almost surely, 2^404371972 is an apocalyptic number.

It is an amenable number.

404371972 is a deficient number, since it is larger than the sum of its proper divisors (306216984).

404371972 is a wasteful number, since it uses less digits than its factorization.

404371972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419718 (or 419716 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 404371972 is about 20109.0022626683. The cubic root of 404371972 is about 739.4809922940.

The spelling of 404371972 in words is "four hundred four million, three hundred seventy-one thousand, nine hundred seventy-two".