490831 has 4 divisors (see below), whose sum is σ = 535464. Its totient is φ = 446200.

The previous prime is 490829. The next prime is 490837. The reversal of 490831 is 138094.

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 490831 - 2¹ = 490829 is a prime.

It is a super-2 number, since 2×490831² = 481830141122, 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 = 490796 and 490805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490837) 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, 22300 + ... + 22321.

It is an arithmetic number, because the mean of its divisors is an integer number (133866).

2⁴⁹⁰⁸³¹ is an apocalyptic number.

490831 is a deficient number, since it is larger than the sum of its proper divisors (44633).

490831 is a wasteful number, since it uses less digits than its factorization.

490831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44632.

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

The square root of 490831 is about 700.5933199796. The cubic root of 490831 is about 78.8818936982.

The spelling of 490831 in words is "four hundred ninety thousand, eight hundred thirty-one".