8918091 has 24 divisors (see below), whose sum is σ = 15855840. Its totient is φ = 4703616.

The previous prime is 8918069. The next prime is 8918099. The reversal of 8918091 is 1908198.

It is not a de Polignac number, because 8918091 - 2⁵ = 8918059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8918099) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4626 + ... + 6263.

It is an arithmetic number, because the mean of its divisors is an integer number (660660).

Almost surely, 2^8918091 is an apocalyptic number.

8918091 is a deficient number, since it is larger than the sum of its proper divisors (6937749).

8918091 is a wasteful number, since it uses less digits than its factorization.

8918091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10915 (or 10912 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The square root of 8918091 is about 2986.3172972744. The cubic root of 8918091 is about 207.3754301423.

The spelling of 8918091 in words is "eight million, nine hundred eighteen thousand, ninety-one".