404972368 has 20 divisors (see below), whose sum is σ = 830789460. Its totient is φ = 190575104.

The previous prime is 404972357. The next prime is 404972369. The reversal of 404972368 is 863279404.

It can be written as a sum of positive squares in 2 ways, for example, as 189117504 + 215854864 = 13752^2 + 14692^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404972369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 744163 + ... + 744706.

It is an arithmetic number, because the mean of its divisors is an integer number (41539473).

Almost surely, 2^404972368 is an apocalyptic number.

It is an amenable number.

404972368 is an abundant number, since it is smaller than the sum of its proper divisors (425817092).

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

404972368 is a wasteful number, since it uses less digits than its factorization.

404972368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1488894 (or 1488888 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 404972368 is about 20123.9252632283. The cubic root of 404972368 is about 739.8467956518.

The spelling of 404972368 in words is "four hundred four million, nine hundred seventy-two thousand, three hundred sixty-eight".