390860 has 12 divisors (see below), whose sum is σ = 820848. Its totient is φ = 156336.

The previous prime is 390851. The next prime is 390869. The reversal of 390860 is 68093.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (390851) and next prime (390869).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 390860.

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

390860 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 3 ways as a sum of consecutive naturals, for example, 9752 + ... + 9791.

It is an arithmetic number, because the mean of its divisors is an integer number (68404).

2³⁹⁰⁸⁶⁰ is an apocalyptic number.

It is an amenable number.

390860 is an abundant number, since it is smaller than the sum of its proper divisors (429988).

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

390860 is a wasteful number, since it uses less digits than its factorization.

390860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19552 (or 19550 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 390860 is about 625.1879717333. The cubic root of 390860 is about 73.1150995923.

The spelling of 390860 in words is "three hundred ninety thousand, eight hundred sixty".