390860648 has 32 divisors (see below), whose sum is σ = 772623360. Its totient is φ = 185096640.

The previous prime is 390860629. The next prime is 390860653. The reversal of 390860648 is 846068093.

It is a junction number, because it is equal to n+sod(n) for n = 390860599 and 390860608.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5111 + ... + 28422.

It is an arithmetic number, because the mean of its divisors is an integer number (24144480).

Almost surely, 2^390860648 is an apocalyptic number.

It is an amenable number.

390860648 is a deficient number, since it is larger than the sum of its proper divisors (381762712).

390860648 is a wasteful number, since it uses less digits than its factorization.

390860648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33617 (or 33613 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 390860648 is about 19770.1959524937. The cubic root of 390860648 is about 731.1513999766.

The spelling of 390860648 in words is "three hundred ninety million, eight hundred sixty thousand, six hundred forty-eight".