404947924 has 6 divisors (see below), whose sum is σ = 708658874. Its totient is φ = 202473960.

The previous prime is 404947903. The next prime is 404947927. The reversal of 404947924 is 429749404.

It can be written as a sum of positive squares in only one way, i.e., 404412100 + 535824 = 20110^2 + 732^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404947927) 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 as a sum of consecutive naturals, namely, 50618487 + ... + 50618494.

Almost surely, 2^404947924 is an apocalyptic number.

It is an amenable number.

404947924 is a deficient number, since it is larger than the sum of its proper divisors (303710950).

404947924 is a wasteful number, since it uses less digits than its factorization.

404947924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101236985 (or 101236983 counting only the distinct ones).

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

The square root of 404947924 is about 20123.3179172819. The cubic root of 404947924 is about 739.8319097152.

The spelling of 404947924 in words is "four hundred four million, nine hundred forty-seven thousand, nine hundred twenty-four".