499668731 has 2 divisors, whose sum is σ = 499668732.
Its totient is φ = 499668730.
The previous prime is 499668679. The next prime is 499668737. The reversal of 499668731 is 137866994.
It is a strong prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-499668731 is a prime.
It is a super-2 number, since 2×4996687312 = 499337681478300722, which contains 22 as substring.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (499668737) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249834365 + 249834366.
It is an arithmetic number, because the mean of its divisors is an integer number (249834366).
Almost surely, 2499668731 is an apocalyptic number.
499668731 is a deficient number, since it is larger than the sum of its proper divisors (1).
499668731 is an equidigital number, since it uses as much as digits as its factorization.
499668731 is an evil number, because the sum of its binary digits is even.
The product of its digits is 1959552, while the sum is 53.
The square root of 499668731 is about 22353.2711476419.
The cubic root of 499668731 is about 793.5252016724.
The spelling of 499668731 in words is "four hundred ninety-nine million, six hundred sixty-eight thousand, seven hundred thirty-one".