404641856 has 28 divisors (see below), whose sum is σ = 818118252. Its totient is φ = 198501888.

The previous prime is 404641823. The next prime is 404641889. The reversal of 404641856 is 658146404.

It is an interprime number because it is at equal distance from previous prime (404641823) and next prime (404641889).

It can be written as a sum of positive squares in 2 ways, for example, as 160782400 + 243859456 = 12680^2 + 15616^2 .

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, 56255 + ... + 63038.

It is an arithmetic number, because the mean of its divisors is an integer number (29218509).

Almost surely, 2^404641856 is an apocalyptic number.

It is an amenable number.

404641856 is an abundant number, since it is smaller than the sum of its proper divisors (413476396).

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

404641856 is a wasteful number, since it uses less digits than its factorization.

404641856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119358 (or 119348 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 404641856 is about 20115.7116702343. The cubic root of 404641856 is about 739.6454693257.

The spelling of 404641856 in words is "four hundred four million, six hundred forty-one thousand, eight hundred fifty-six".