868931 has 4 divisors (see below), whose sum is σ = 993072. Its totient is φ = 744792.

The previous prime is 868909. The next prime is 868937. The reversal of 868931 is 139868.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 868931 - 2⁶ = 868867 is a prime.

It is a super-2 number, since 2×868931² = 1510082165522, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 868891 and 868900.

It is not an unprimeable number, because it can be changed into a prime (868937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62060 + ... + 62073.

It is an arithmetic number, because the mean of its divisors is an integer number (248268).

2⁸⁶⁸⁹³¹ is an apocalyptic number.

868931 is a deficient number, since it is larger than the sum of its proper divisors (124141).

868931 is a wasteful number, since it uses less digits than its factorization.

868931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124140.

The product of its digits is 10368, while the sum is 35.

The square root of 868931 is about 932.1646850208. The cubic root of 868931 is about 95.4249110509.

The spelling of 868931 in words is "eight hundred sixty-eight thousand, nine hundred thirty-one".