390056860 has 24 divisors (see below), whose sum is σ = 823371696. Its totient is φ = 155212800.

The previous prime is 390056809. The next prime is 390056861. The reversal of 390056860 is 68650093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390056861) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 46666 + ... + 54385.

It is an arithmetic number, because the mean of its divisors is an integer number (34307154).

Almost surely, 2^390056860 is an apocalyptic number.

It is an amenable number.

390056860 is an abundant number, since it is smaller than the sum of its proper divisors (433314836).

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

390056860 is a wasteful number, since it uses less digits than its factorization.

390056860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101253 (or 101251 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 390056860 is about 19749.8572146737. The cubic root of 390056860 is about 730.6498622897.

The spelling of 390056860 in words is "three hundred ninety million, fifty-six thousand, eight hundred sixty".