499764881 has 16 divisors (see below), whose sum is σ = 623583360. Its totient is φ = 389114880.

The previous prime is 499764821. The next prime is 499764901. The reversal of 499764881 is 188467994.

It is not a de Polignac number, because 499764881 - 2⁶ = 499764817 is a prime.

It is a super-2 number, since 2×499764881² = 499529872561888322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499764821) 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, 157745 + ... + 160881.

It is an arithmetic number, because the mean of its divisors is an integer number (38973960).

Almost surely, 2^499764881 is an apocalyptic number.

It is an amenable number.

499764881 is a deficient number, since it is larger than the sum of its proper divisors (123818479).

499764881 is a wasteful number, since it uses less digits than its factorization.

499764881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5224.

The product of its digits is 3483648, while the sum is 56.

The square root of 499764881 is about 22355.4217361248. The cubic root of 499764881 is about 793.5760970957.

The spelling of 499764881 in words is "four hundred ninety-nine million, seven hundred sixty-four thousand, eight hundred eighty-one".