89115669431 has 4 divisors (see below), whose sum is σ = 91011747552. Its totient is φ = 87219591312.

The previous prime is 89115669413. The next prime is 89115669437. The reversal of 89115669431 is 13496651198.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89115669431 is a prime.

It is a super-2 number, since 2×89115669431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89115669437) 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, 948038990 + ... + 948039083.

It is an arithmetic number, because the mean of its divisors is an integer number (22752936888).

Almost surely, 2^89115669431 is an apocalyptic number.

89115669431 is a deficient number, since it is larger than the sum of its proper divisors (1896078121).

89115669431 is a wasteful number, since it uses less digits than its factorization.

89115669431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1896078120.

The product of its digits is 1399680, while the sum is 53.

The spelling of 89115669431 in words is "eighty-nine billion, one hundred fifteen million, six hundred sixty-nine thousand, four hundred thirty-one".