390868 has 24 divisors (see below), whose sum is σ = 744800. Its totient is φ = 178848.

The previous prime is 390851. The next prime is 390869. The reversal of 390868 is 868093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390869) by changing a digit.

390868 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2743 + ... + 2881.

2³⁹⁰⁸⁶⁸ is an apocalyptic number.

390868 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

390868 is a deficient number, since it is larger than the sum of its proper divisors (353932).

390868 is a wasteful number, since it uses less digits than its factorization.

390868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 390868 is about 625.1943697763. The cubic root of 390868 is about 73.1155984212.

The spelling of 390868 in words is "three hundred ninety thousand, eight hundred sixty-eight".