8990977647 has 16 divisors (see below), whose sum is σ = 12403445760. Its totient is φ = 5787146400.

The previous prime is 8990977613. The next prime is 8990977649. The reversal of 8990977647 is 7467790998.

It is not a de Polignac number, because 8990977647 - 2¹¹ = 8990975599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8990977649) 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, 72072 + ... + 152237.

It is an arithmetic number, because the mean of its divisors is an integer number (775215360).

Almost surely, 2^8990977647 is an apocalyptic number.

8990977647 is a deficient number, since it is larger than the sum of its proper divisors (3412468113).

8990977647 is a wasteful number, since it uses less digits than its factorization.

8990977647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224774.

The product of its (nonzero) digits is 48009024, while the sum is 66.

The square root of 8990977647 is about 94820.7659059976. The cubic root of 8990977647 is about 2079.3885072999.

The spelling of 8990977647 in words is "eight billion, nine hundred ninety million, nine hundred seventy-seven thousand, six hundred forty-seven".