89516881 has 6 divisors (see below), whose sum is σ = 92710982. Its totient is φ = 86429280.

The previous prime is 89516873. The next prime is 89516893. The reversal of 89516881 is 18861598.

It can be written as a sum of positive squares in 3 ways, for example, as 384400 + 89132481 = 620^2 + 9441^2 .

It is not a de Polignac number, because 89516881 - 2³ = 89516873 is a prime.

It is a super-2 number, since 2×89516881² = 16026543967936322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89516821) 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, 52380 + ... + 54061.

Almost surely, 2^89516881 is an apocalyptic number.

It is an amenable number.

89516881 is a deficient number, since it is larger than the sum of its proper divisors (3194101).

89516881 is a wasteful number, since it uses less digits than its factorization.

89516881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106499 (or 106470 counting only the distinct ones).

The product of its digits is 138240, while the sum is 46.

The square root of 89516881 is about 9461.3361107192. The cubic root of 89516881 is about 447.3371645203.

The spelling of 89516881 in words is "eighty-nine million, five hundred sixteen thousand, eight hundred eighty-one".