400393286465 has 16 divisors (see below), whose sum is σ = 495553144320. Its totient is φ = 310395451200.

The previous prime is 400393286459. The next prime is 400393286521. The reversal of 400393286465 is 564682393004.

It is not a de Polignac number, because 400393286465 - 2²⁴ = 400376509249 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8410925 + ... + 8458394.

It is an arithmetic number, because the mean of its divisors is an integer number (30972071520).

Almost surely, 2^400393286465 is an apocalyptic number.

It is an amenable number.

400393286465 is a deficient number, since it is larger than the sum of its proper divisors (95159857855).

400393286465 is a wasteful number, since it uses less digits than its factorization.

400393286465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16869472.

The product of its (nonzero) digits is 3732480, while the sum is 50.

The spelling of 400393286465 in words is "four hundred billion, three hundred ninety-three million, two hundred eighty-six thousand, four hundred sixty-five".