400615460 has 24 divisors (see below), whose sum is σ = 961477440. Its totient is φ = 137353824.

The previous prime is 400615447. The next prime is 400615471. The reversal of 400615460 is 64516004.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1430630 + ... + 1430909.

It is an arithmetic number, because the mean of its divisors is an integer number (40061560).

Almost surely, 2^400615460 is an apocalyptic number.

It is an amenable number.

400615460 is an abundant number, since it is smaller than the sum of its proper divisors (560861980).

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

400615460 is a wasteful number, since it uses less digits than its factorization.

400615460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2861555 (or 2861553 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 400615460 is about 20015.3805859394. The cubic root of 400615460 is about 737.1840017482.

The spelling of 400615460 in words is "four hundred million, six hundred fifteen thousand, four hundred sixty".