8990767091 has 6 divisors (see below), whose sum is σ = 9398666340. Its totient is φ = 8599863668.

The previous prime is 8990767087. The next prime is 8990767129. The reversal of 8990767091 is 1907670998.

It is not a de Polignac number, because 8990767091 - 2² = 8990767087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8990767001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8497361 + ... + 8498418.

It is an arithmetic number, because the mean of its divisors is an integer number (1566444390).

Almost surely, 2^8990767091 is an apocalyptic number.

8990767091 is a deficient number, since it is larger than the sum of its proper divisors (407899249).

8990767091 is a wasteful number, since it uses less digits than its factorization.

8990767091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16995825 (or 16995802 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 56.

The square root of 8990767091 is about 94819.6556152784. The cubic root of 8990767091 is about 2079.3722750591.

It can be divided in two parts, 8 and 990767091, that added together give a palindrome (990767099).

The spelling of 8990767091 in words is "eight billion, nine hundred ninety million, seven hundred sixty-seven thousand, ninety-one".