400152444 has 24 divisors (see below), whose sum is σ = 936883920. Its totient is φ = 132927744.

The previous prime is 400152439. The next prime is 400152457. The reversal of 400152444 is 444251004.

It is a happy number.

It is a congruent number.

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, 53389 + ... + 60420.

It is an arithmetic number, because the mean of its divisors is an integer number (39036830).

Almost surely, 2^400152444 is an apocalyptic number.

It is an amenable number.

400152444 is an abundant number, since it is smaller than the sum of its proper divisors (536731476).

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

400152444 is a wasteful number, since it uses less digits than its factorization.

400152444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114109 (or 114107 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 400152444 is about 20003.8107369571. The cubic root of 400152444 is about 736.8998892561.

The spelling of 400152444 in words is "four hundred million, one hundred fifty-two thousand, four hundred forty-four".