89939256944161 has 3 divisors (see below), whose sum is σ = 89939266427793. Its totient is φ = 89939247460530.

The previous prime is 89939256944143. The next prime is 89939256944167. The reversal of 89939256944161 is 16144965293998.

The square root of 89939256944161 is 9483631.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 89939256944161 - 2¹¹ = 89939256942113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89939256944167) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4741816 + ... + 14225446.

It is an arithmetic number, because the mean of its divisors is an integer number (29979755475931).

Almost surely, 2^{89939256944161} is an apocalyptic number.

89939256944161 is the 9483631-st square number.

89939256944161 is the 4741816-th centered octagonal number.

It is an amenable number.

89939256944161 is a deficient number, since it is larger than the sum of its proper divisors (9483632).

89939256944161 is an frugal number, since it uses more digits than its factorization.

89939256944161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18967262 (or 9483631 counting only the distinct ones).

The product of its digits is 906992640, while the sum is 76.

The spelling of 89939256944161 in words is "eighty-nine trillion, nine hundred thirty-nine billion, two hundred fifty-six million, nine hundred forty-four thousand, one hundred sixty-one".