390039648 has 48 divisors (see below), whose sum is σ = 1027902960. Its totient is φ = 129499136.

The previous prime is 390039631. The next prime is 390039649. The reversal of 390039648 is 846930093.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390039649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16768 + ... + 32576.

It is an arithmetic number, because the mean of its divisors is an integer number (21414645).

Almost surely, 2^390039648 is an apocalyptic number.

It is an amenable number.

390039648 is an abundant number, since it is smaller than the sum of its proper divisors (637863312).

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

390039648 is a wasteful number, since it uses less digits than its factorization.

390039648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16079 (or 16071 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 390039648 is about 19749.4214598808. The cubic root of 390039648 is about 730.6391150272.

The spelling of 390039648 in words is "three hundred ninety million, thirty-nine thousand, six hundred forty-eight".