499977631 has 4 divisors (see below), whose sum is σ = 500109192. Its totient is φ = 499846072.

The previous prime is 499977629. The next prime is 499977637. The reversal of 499977631 is 136779994.

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 499977631 - 2¹ = 499977629 is a prime.

It is a super-2 number, since 2×499977631² = 499955263000744322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499977637) 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, 59905 + ... + 67738.

It is an arithmetic number, because the mean of its divisors is an integer number (125027298).

Almost surely, 2^499977631 is an apocalyptic number.

499977631 is a deficient number, since it is larger than the sum of its proper divisors (131561).

499977631 is a wasteful number, since it uses less digits than its factorization.

499977631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131560.

The product of its digits is 2571912, while the sum is 55.

The square root of 499977631 is about 22360.1795833576. The cubic root of 499977631 is about 793.6886896162.

The spelling of 499977631 in words is "four hundred ninety-nine million, nine hundred seventy-seven thousand, six hundred thirty-one".