499559831 has 2 divisors, whose sum is σ = 499559832. Its totient is φ = 499559830.

The previous prime is 499559791. The next prime is 499559857. The reversal of 499559831 is 138955994.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-499559831 is a prime.

It is a super-2 number, since 2×499559831² = 499120049497497122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499559881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249779915 + 249779916.

It is an arithmetic number, because the mean of its divisors is an integer number (249779916).

Almost surely, 2^499559831 is an apocalyptic number.

499559831 is a deficient number, since it is larger than the sum of its proper divisors (1).

499559831 is an equidigital number, since it uses as much as digits as its factorization.

499559831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1749600, while the sum is 53.

The square root of 499559831 is about 22350.8351298111. The cubic root of 499559831 is about 793.4675493601.

The spelling of 499559831 in words is "four hundred ninety-nine million, five hundred fifty-nine thousand, eight hundred thirty-one".