404745856 has 32 divisors (see below), whose sum is σ = 807374880. Its totient is φ = 202110720.

The previous prime is 404745851. The next prime is 404745863. The reversal of 404745856 is 658547404.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (404745851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130435 + ... + 133501.

It is an arithmetic number, because the mean of its divisors is an integer number (25230465).

Almost surely, 2^404745856 is an apocalyptic number.

It is an amenable number.

404745856 is a deficient number, since it is larger than the sum of its proper divisors (402629024).

404745856 is a wasteful number, since it uses less digits than its factorization.

404745856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4112 (or 4100 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 43.

The square root of 404745856 is about 20118.2965481673. The cubic root of 404745856 is about 739.7088311509.

The spelling of 404745856 in words is "four hundred four million, seven hundred forty-five thousand, eight hundred fifty-six".