88959581 has 4 divisors (see below), whose sum is σ = 91363932. Its totient is φ = 86555232.

The previous prime is 88959571. The next prime is 88959593. The reversal of 88959581 is 18595988.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 70392100 + 18567481 = 8390^2 + 4309^2 .

It is a cyclic number.

It is not a de Polignac number, because 88959581 - 2⁶ = 88959517 is a prime.

It is a super-2 number, since 2×88959581² = 15827614103391122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88959511) 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, 1202120 + ... + 1202193.

It is an arithmetic number, because the mean of its divisors is an integer number (22840983).

Almost surely, 2^88959581 is an apocalyptic number.

It is an amenable number.

88959581 is a deficient number, since it is larger than the sum of its proper divisors (2404351).

88959581 is a wasteful number, since it uses less digits than its factorization.

88959581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2404350.

The product of its digits is 1036800, while the sum is 53.

The square root of 88959581 is about 9431.8386860675. The cubic root of 88959581 is about 446.4069111100.

The spelling of 88959581 in words is "eighty-eight million, nine hundred fifty-nine thousand, five hundred eighty-one".