404517972 has 24 divisors (see below), whose sum is σ = 966897792. Its totient is φ = 131550400.

The previous prime is 404517947. The next prime is 404517979. The reversal of 404517972 is 279715404.

It is a self number, because there is not a number n which added to its sum of digits gives 404517972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404517979) 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, 410604 + ... + 411587.

It is an arithmetic number, because the mean of its divisors is an integer number (40287408).

Almost surely, 2^404517972 is an apocalyptic number.

It is an amenable number.

404517972 is an abundant number, since it is smaller than the sum of its proper divisors (562379820).

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

404517972 is a wasteful number, since it uses less digits than its factorization.

404517972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822239 (or 822237 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 404517972 is about 20112.6321499698. The cubic root of 404517972 is about 739.5699790367.

The spelling of 404517972 in words is "four hundred four million, five hundred seventeen thousand, nine hundred seventy-two".