400045456 has 40 divisors (see below), whose sum is σ = 817308800. Its totient is φ = 189164160.

The previous prime is 400045439. The next prime is 400045507. The reversal of 400045456 is 654540004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324361 + ... + 325591.

It is an arithmetic number, because the mean of its divisors is an integer number (20432720).

Almost surely, 2^400045456 is an apocalyptic number.

It is an amenable number.

400045456 is an abundant number, since it is smaller than the sum of its proper divisors (417263344).

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

400045456 is a wasteful number, since it uses less digits than its factorization.

400045456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2327 (or 2321 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 400045456 is about 20001.1363677167. The cubic root of 400045456 is about 736.8342088935.

The spelling of 400045456 in words is "four hundred million, forty-five thousand, four hundred fifty-six".