8839390091 has 16 divisors (see below), whose sum is σ = 10724682240. Its totient is φ = 7112085120.

The previous prime is 8839390069. The next prime is 8839390093. The reversal of 8839390091 is 1900939388.

It is not a de Polignac number, because 8839390091 - 2²⁶ = 8772281227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8839390093) 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, 52895 + ... + 143096.

It is an arithmetic number, because the mean of its divisors is an integer number (670292640).

Almost surely, 2^8839390091 is an apocalyptic number.

8839390091 is a deficient number, since it is larger than the sum of its proper divisors (1885292149).

8839390091 is a wasteful number, since it uses less digits than its factorization.

8839390091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196394.

The product of its (nonzero) digits is 419904, while the sum is 50.

The square root of 8839390091 is about 94018.0306696540. The cubic root of 8839390091 is about 2067.6360709884.

The spelling of 8839390091 in words is "eight billion, eight hundred thirty-nine million, three hundred ninety thousand, ninety-one".