8990642699 has 16 divisors (see below), whose sum is σ = 9612316800. Its totient is φ = 8384010624.

The previous prime is 8990642693. The next prime is 8990642701. The reversal of 8990642699 is 9962460998.

It is a cyclic number.

It is not a de Polignac number, because 8990642699 - 2²⁰ = 8989594123 is a prime.

It is a super-2 number, since 2×8990642699² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8990642693) 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, 3319904 + ... + 3322610.

It is an arithmetic number, because the mean of its divisors is an integer number (600769800).

Almost surely, 2^8990642699 is an apocalyptic number.

8990642699 is a deficient number, since it is larger than the sum of its proper divisors (621674101).

8990642699 is a wasteful number, since it uses less digits than its factorization.

8990642699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5402.

The product of its (nonzero) digits is 15116544, while the sum is 62.

The square root of 8990642699 is about 94818.9996730613. Note that the first 3 decimals coincide. The cubic root of 8990642699 is about 2079.3626852778.

Adding to 8990642699 its sum of digits (62), we get a square (8990642761 = 94819²).

The spelling of 8990642699 in words is "eight billion, nine hundred ninety million, six hundred forty-two thousand, six hundred ninety-nine".