404897864 has 16 divisors (see below), whose sum is σ = 867638400. Its totient is φ = 173527632.

The previous prime is 404897863. The next prime is 404897869. The reversal of 404897864 is 468798404.

It is not an unprimeable number, because it can be changed into a prime (404897861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3615104 + ... + 3615215.

It is an arithmetic number, because the mean of its divisors is an integer number (54227400).

Almost surely, 2^404897864 is an apocalyptic number.

It is an amenable number.

404897864 is an abundant number, since it is smaller than the sum of its proper divisors (462740536).

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

404897864 is a wasteful number, since it uses less digits than its factorization.

404897864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7230332 (or 7230328 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 50.

The square root of 404897864 is about 20122.0740481691. The cubic root of 404897864 is about 739.8014222463.

The spelling of 404897864 in words is "four hundred four million, eight hundred ninety-seven thousand, eight hundred sixty-four".