860390 has 16 divisors (see below), whose sum is σ = 1566432. Its totient is φ = 340224.

The previous prime is 860383. The next prime is 860393. The reversal of 860390 is 93068.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 860390.

It is not an unprimeable number, because it can be changed into a prime (860393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 527 + ... + 1413.

It is an arithmetic number, because the mean of its divisors is an integer number (97902).

2⁸⁶⁰³⁹⁰ is an apocalyptic number.

860390 is a deficient number, since it is larger than the sum of its proper divisors (706042).

860390 is a wasteful number, since it uses less digits than its factorization.

860390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991.

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

The square root of 860390 is about 927.5720996235. The cubic root of 860390 is about 95.1112270640. Note that the first 3 decimals are identical.

The spelling of 860390 in words is "eight hundred sixty thousand, three hundred ninety".