862869 has 16 divisors (see below), whose sum is σ = 1392768. Its totient is φ = 463872.

The previous prime is 862861. The next prime is 862879. The reversal of 862869 is 968268.

862869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 862869 - 2³ = 862861 is a prime.

It is a super-2 number, since 2×862869² = 1489085822322, which contains 22 as substring.

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 862869.

It is not an unprimeable number, because it can be changed into a prime (862861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 852 + ... + 1565.

It is an arithmetic number, because the mean of its divisors is an integer number (87048).

2⁸⁶²⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

862869 is a deficient number, since it is larger than the sum of its proper divisors (529899).

862869 is a wasteful number, since it uses less digits than its factorization.

862869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2444.

The product of its digits is 41472, while the sum is 39.

The square root of 862869 is about 928.9074227284. The cubic root of 862869 is about 95.2024859295.

The spelling of 862869 in words is "eight hundred sixty-two thousand, eight hundred sixty-nine".