490999731 has 32 divisors (see below), whose sum is σ = 697847808. Its totient is φ = 306529920.

The previous prime is 490999721. The next prime is 490999771. The reversal of 490999731 is 137999094.

It is not a de Polignac number, because 490999731 - 2¹⁵ = 490966963 is a prime.

It is a super-2 number, since 2×490999731² = 482161471684144722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (490999721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1007970 + ... + 1008456.

It is an arithmetic number, because the mean of its divisors is an integer number (21807744).

Almost surely, 2^490999731 is an apocalyptic number.

490999731 is a deficient number, since it is larger than the sum of its proper divisors (206848077).

490999731 is a wasteful number, since it uses less digits than its factorization.

490999731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851.

The product of its (nonzero) digits is 551124, while the sum is 51.

The square root of 490999731 is about 22158.5137362595. The cubic root of 490999731 is about 788.9093163313.

The spelling of 490999731 in words is "four hundred ninety million, nine hundred ninety-nine thousand, seven hundred thirty-one".