88917813 has 6 divisors (see below), whose sum is σ = 128436854. Its totient is φ = 59278536.

The previous prime is 88917781. The next prime is 88917847. The reversal of 88917813 is 31871988.

It can be written as a sum of positive squares in only one way, i.e., 54730404 + 34187409 = 7398^2 + 5847^2 .

It is not a de Polignac number, because 88917813 - 2⁵ = 88917781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88917613) 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, 4939870 + ... + 4939887.

Almost surely, 2^88917813 is an apocalyptic number.

It is an amenable number.

88917813 is a deficient number, since it is larger than the sum of its proper divisors (39519041).

88917813 is a wasteful number, since it uses less digits than its factorization.

88917813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9879763 (or 9879760 counting only the distinct ones).

The product of its digits is 96768, while the sum is 45.

The square root of 88917813 is about 9429.6242236899. The cubic root of 88917813 is about 446.3370350212.

The spelling of 88917813 in words is "eighty-eight million, nine hundred seventeen thousand, eight hundred thirteen".