8664478499 has 16 divisors (see below), whose sum is σ = 8834585760. Its totient is φ = 8496322560.

The previous prime is 8664478447. The next prime is 8664478547. The reversal of 8664478499 is 9948744668.

It is a cyclic number.

It is not a de Polignac number, because 8664478499 - 2⁸ = 8664478243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8664478399) 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, 6365579 + ... + 6366939.

It is an arithmetic number, because the mean of its divisors is an integer number (552161610).

Almost surely, 2^8664478499 is an apocalyptic number.

8664478499 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

8664478499 is a deficient number, since it is larger than the sum of its proper divisors (170107261).

8664478499 is a wasteful number, since it uses less digits than its factorization.

8664478499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990.

The product of its digits is 83607552, while the sum is 65.

The square root of 8664478499 is about 93083.1805376245. The cubic root of 8664478499 is about 2053.9071627160.

The spelling of 8664478499 in words is "eight billion, six hundred sixty-four million, four hundred seventy-eight thousand, four hundred ninety-nine".