89171957 has 4 divisors (see below), whose sum is σ = 101910816. Its totient is φ = 76433100.

The previous prime is 89171947. The next prime is 89171969. The reversal of 89171957 is 75917198.

89171957 is nontrivially palindromic in base 3.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89171957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89171947) 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, 6369419 + ... + 6369432.

It is an arithmetic number, because the mean of its divisors is an integer number (25477704).

Almost surely, 2^89171957 is an apocalyptic number.

It is an amenable number.

89171957 is a deficient number, since it is larger than the sum of its proper divisors (12738859).

89171957 is a wasteful number, since it uses less digits than its factorization.

89171957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12738858.

The product of its digits is 158760, while the sum is 47.

The square root of 89171957 is about 9443.0904369279. The cubic root of 89171957 is about 446.7618692024.

The spelling of 89171957 in words is "eighty-nine million, one hundred seventy-one thousand, nine hundred fifty-seven".