390685614 has 64 divisors (see below), whose sum is σ = 868734720. Its totient is φ = 116145920.

The previous prime is 390685609. The next prime is 390685621. The reversal of 390685614 is 416586093.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1333252 + ... + 1333544.

It is an arithmetic number, because the mean of its divisors is an integer number (13573980).

Almost surely, 2^390685614 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 390685614, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (434367360).

390685614 is an abundant number, since it is smaller than the sum of its proper divisors (478049106).

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

390685614 is a wasteful number, since it uses less digits than its factorization.

390685614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 390685614 is about 19765.7687429556. The cubic root of 390685614 is about 731.0422430321.

The spelling of 390685614 in words is "three hundred ninety million, six hundred eighty-five thousand, six hundred fourteen".