390997464 has 96 divisors (see below), whose sum is σ = 1157195760. Its totient is φ = 109359360.

The previous prime is 390997457. The next prime is 390997469. The reversal of 390997464 is 464799093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390997469) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32574 + ... + 42930.

Almost surely, 2^390997464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 390997464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (578597880).

390997464 is an abundant number, since it is smaller than the sum of its proper divisors (766198296).

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

390997464 is a wasteful number, since it uses less digits than its factorization.

390997464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10401 (or 10386 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 51.

The square root of 390997464 is about 19773.6558076649. The cubic root of 390997464 is about 731.2367002329.

The spelling of 390997464 in words is "three hundred ninety million, nine hundred ninety-seven thousand, four hundred sixty-four".