89271921 has 16 divisors (see below), whose sum is σ = 121806720. Its totient is φ = 58141440.

The previous prime is 89271911. The next prime is 89271961. The reversal of 89271921 is 12917298.

It is not a de Polignac number, because 89271921 - 2⁶ = 89271857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89271921.

It is not an unprimeable number, because it can be changed into a prime (89271911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22215 + ... + 25923.

It is an arithmetic number, because the mean of its divisors is an integer number (7612920).

Almost surely, 2^89271921 is an apocalyptic number.

It is an amenable number.

89271921 is a deficient number, since it is larger than the sum of its proper divisors (32534799).

89271921 is a wasteful number, since it uses less digits than its factorization.

89271921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3896.

The product of its digits is 18144, while the sum is 39.

The square root of 89271921 is about 9448.3819249647. The cubic root of 89271921 is about 446.9287506115.

The spelling of 89271921 in words is "eighty-nine million, two hundred seventy-one thousand, nine hundred twenty-one".