904831 has 4 divisors (see below), whose sum is σ = 907200. Its totient is φ = 902464.

The previous prime is 904823. The next prime is 904847. The reversal of 904831 is 138409.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 138409 = 61 ⋅2269.

It is a cyclic number.

It is not a de Polignac number, because 904831 - 2³ = 904823 is a prime.

It is a super-2 number, since 2×904831² = 1637438277122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 904796 and 904805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (904801) 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, 466 + ... + 1423.

It is an arithmetic number, because the mean of its divisors is an integer number (226800).

2⁹⁰⁴⁸³¹ is an apocalyptic number.

904831 is a deficient number, since it is larger than the sum of its proper divisors (2369).

904831 is a wasteful number, since it uses less digits than its factorization.

904831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2368.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 904831 is about 951.2260509469. The cubic root of 904831 is about 96.7213813647.

The spelling of 904831 in words is "nine hundred four thousand, eight hundred thirty-one".