490589831 has 2 divisors, whose sum is σ = 490589832. Its totient is φ = 490589830.

The previous prime is 490589741. The next prime is 490589837. The reversal of 490589831 is 138985094.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-490589831 is a prime.

It is a super-2 number, since 2×490589831² = 481356764561217122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (490589837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245294915 + 245294916.

It is an arithmetic number, because the mean of its divisors is an integer number (245294916).

Almost surely, 2^490589831 is an apocalyptic number.

490589831 is a deficient number, since it is larger than the sum of its proper divisors (1).

490589831 is an equidigital number, since it uses as much as digits as its factorization.

490589831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 490589831 is about 22149.2625385136. The cubic root of 490589831 is about 788.6897208562.

The spelling of 490589831 in words is "four hundred ninety million, five hundred eighty-nine thousand, eight hundred thirty-one".