400252464 has 60 divisors (see below), whose sum is σ = 1122367896. Its totient is φ = 133153536.

The previous prime is 400252429. The next prime is 400252483. The reversal of 400252464 is 464252004.

400252464 is a `hidden beast` number, since 400 + 252 + 4 + 6 + 4 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78604 + ... + 83540.

Almost surely, 2^400252464 is an apocalyptic number.

It is an amenable number.

400252464 is an abundant number, since it is smaller than the sum of its proper divisors (722115432).

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

400252464 is a wasteful number, since it uses less digits than its factorization.

400252464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5514 (or 5505 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 400252464 is about 20006.3106044068. The cubic root of 400252464 is about 736.9612813480.

The spelling of 400252464 in words is "four hundred million, two hundred fifty-two thousand, four hundred sixty-four".