499666437 has 6 divisors (see below), whose sum is σ = 721740422. Its totient is φ = 333110952.

The previous prime is 499666429. The next prime is 499666471. The reversal of 499666437 is 734666994.

It can be written as a sum of positive squares in only one way, i.e., 479872836 + 19793601 = 21906^2 + 4449^2 .

It is not a de Polignac number, because 499666437 - 2³ = 499666429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499666337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27759238 + ... + 27759255.

Almost surely, 2^499666437 is an apocalyptic number.

It is an amenable number.

499666437 is a deficient number, since it is larger than the sum of its proper divisors (222073985).

499666437 is a wasteful number, since it uses less digits than its factorization.

499666437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55518499 (or 55518496 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 54.

The square root of 499666437 is about 22353.2198351826. The cubic root of 499666437 is about 793.5239873014.

The spelling of 499666437 in words is "four hundred ninety-nine million, six hundred sixty-six thousand, four hundred thirty-seven".