89051971 has 2 divisors, whose sum is σ = 89051972. Its totient is φ = 89051970.

The previous prime is 89051947. The next prime is 89051983. The reversal of 89051971 is 17915098.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89051971 - 2⁵ = 89051939 is a prime.

It is not a weakly prime, because it can be changed into another prime (89051371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44525985 + 44525986.

It is an arithmetic number, because the mean of its divisors is an integer number (44525986).

Almost surely, 2^89051971 is an apocalyptic number.

89051971 is a deficient number, since it is larger than the sum of its proper divisors (1).

89051971 is an equidigital number, since it uses as much as digits as its factorization.

89051971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 40.

The square root of 89051971 is about 9436.7351875529. The cubic root of 89051971 is about 446.5613979916.

The spelling of 89051971 in words is "eighty-nine million, fifty-one thousand, nine hundred seventy-one".