499999131 has 6 divisors (see below), whose sum is σ = 722220980. Its totient is φ = 333332748.

The previous prime is 499999103. The next prime is 499999133. The reversal of 499999131 is 131999994.

It is not a de Polignac number, because 499999131 - 2⁶ = 499999067 is a prime.

It is a super-2 number, since 2×499999131² = 499998262001510322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499999133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27777721 + ... + 27777738.

Almost surely, 2^499999131 is an apocalyptic number.

499999131 is a deficient number, since it is larger than the sum of its proper divisors (222221849).

499999131 is a wasteful number, since it uses less digits than its factorization.

499999131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55555465 (or 55555462 counting only the distinct ones).

The product of its digits is 708588, while the sum is 54.

The square root of 499999131 is about 22360.6603435587. The cubic root of 499999131 is about 793.7000661667.

The spelling of 499999131 in words is "four hundred ninety-nine million, nine hundred ninety-nine thousand, one hundred thirty-one".