8918881 has 4 divisors (see below), whose sum is σ = 8952064. Its totient is φ = 8885700.

The previous prime is 8918869. The next prime is 8918891. The reversal of 8918881 is 1888198.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8918881 - 2⁵ = 8918849 is a prime.

It is a super-2 number, since 2×8918881² = 159092876584322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8918821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16185 + ... + 16726.

It is an arithmetic number, because the mean of its divisors is an integer number (2238016).

Almost surely, 2^8918881 is an apocalyptic number.

It is an amenable number.

8918881 is a deficient number, since it is larger than the sum of its proper divisors (33183).

8918881 is a wasteful number, since it uses less digits than its factorization.

8918881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33182.

The product of its digits is 36864, while the sum is 43.

The square root of 8918881 is about 2986.4495642820. The cubic root of 8918881 is about 207.3815533419.

The spelling of 8918881 in words is "eight million, nine hundred eighteen thousand, eight hundred eighty-one".