402397464 has 64 divisors (see below), whose sum is σ = 1169222400. Its totient is φ = 113019264.

The previous prime is 402397451. The next prime is 402397507. The reversal of 402397464 is 464793204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10387 + ... + 30210.

It is an arithmetic number, because the mean of its divisors is an integer number (18269100).

Almost surely, 2^402397464 is an apocalyptic number.

It is an amenable number.

402397464 is an abundant number, since it is smaller than the sum of its proper divisors (766824936).

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

402397464 is a wasteful number, since it uses less digits than its factorization.

402397464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40672 (or 40668 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 39.

The square root of 402397464 is about 20059.8470582405. The cubic root of 402397464 is about 738.2754239642.

The spelling of 402397464 in words is "four hundred two million, three hundred ninety-seven thousand, four hundred sixty-four".