400253132 has 12 divisors (see below), whose sum is σ = 702683016. Its totient is φ = 199486560.

The previous prime is 400253101. The next prime is 400253143. The reversal of 400253132 is 231352004.

It is a happy number.

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, 158594 + ... + 161097.

It is an arithmetic number, because the mean of its divisors is an integer number (58556918).

Almost surely, 2^400253132 is an apocalyptic number.

It is an amenable number.

400253132 is a deficient number, since it is larger than the sum of its proper divisors (302429884).

400253132 is a wasteful number, since it uses less digits than its factorization.

400253132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320008 (or 320006 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 400253132 is about 20006.3272991321. The cubic root of 400253132 is about 736.9616913307.

The spelling of 400253132 in words is "four hundred million, two hundred fifty-three thousand, one hundred thirty-two".