839825 has 12 divisors (see below), whose sum is σ = 1190400. Its totient is φ = 575760.

The previous prime is 839809. The next prime is 839831. The reversal of 839825 is 528938.

It is not a de Polignac number, because 839825 - 2⁴ = 839809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 839825.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2225 + ... + 2574.

It is an arithmetic number, because the mean of its divisors is an integer number (99200).

2⁸³⁹⁸²⁵ is an apocalyptic number.

It is an amenable number.

839825 is a deficient number, since it is larger than the sum of its proper divisors (350575).

839825 is a wasteful number, since it uses less digits than its factorization.

839825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4816 (or 4811 counting only the distinct ones).

The product of its digits is 17280, while the sum is 35.

The square root of 839825 is about 916.4196636913. The cubic root of 839825 is about 94.3473267985.

The spelling of 839825 in words is "eight hundred thirty-nine thousand, eight hundred twenty-five".