89915171 has 2 divisors, whose sum is σ = 89915172. Its totient is φ = 89915170.

The previous prime is 89915153. The next prime is 89915179. The reversal of 89915171 is 17151998.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89915171 - 2¹⁰ = 89914147 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (89915179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44957585 + 44957586.

It is an arithmetic number, because the mean of its divisors is an integer number (44957586).

Almost surely, 2^89915171 is an apocalyptic number.

89915171 is a deficient number, since it is larger than the sum of its proper divisors (1).

89915171 is an equidigital number, since it uses as much as digits as its factorization.

89915171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 41.

The square root of 89915171 is about 9482.3610456468. The cubic root of 89915171 is about 447.9996329584. Note that the first 3 decimals are identical.

The spelling of 89915171 in words is "eighty-nine million, nine hundred fifteen thousand, one hundred seventy-one".