499921761 has 16 divisors (see below), whose sum is σ = 672874560. Its totient is φ = 330140160.

The previous prime is 499921759. The next prime is 499921783. The reversal of 499921761 is 167129994.

It is not a de Polignac number, because 499921761 - 2¹ = 499921759 is a prime.

It is a super-2 number, since 2×499921761² = 499843534242682242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 499921761.

It is not an unprimeable number, because it can be changed into a prime (499921061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149241 + ... + 152553.

It is an arithmetic number, because the mean of its divisors is an integer number (42054660).

Almost surely, 2^499921761 is an apocalyptic number.

It is an amenable number.

499921761 is a deficient number, since it is larger than the sum of its proper divisors (172952799).

499921761 is a wasteful number, since it uses less digits than its factorization.

499921761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3776.

The product of its digits is 244944, while the sum is 48.

The square root of 499921761 is about 22358.9302293290. The cubic root of 499921761 is about 793.6591249343.

The spelling of 499921761 in words is "four hundred ninety-nine million, nine hundred twenty-one thousand, seven hundred sixty-one".