89172199 has 4 divisors (see below), whose sum is σ = 89205480. Its totient is φ = 89138920.

The previous prime is 89172163. The next prime is 89172217. The reversal of 89172199 is 99127198.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 89172199 - 2²⁵ = 55617767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89172299) 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 3 ways as a sum of consecutive naturals, for example, 12232 + ... + 18109.

It is an arithmetic number, because the mean of its divisors is an integer number (22301370).

Almost surely, 2^89172199 is an apocalyptic number.

89172199 is a deficient number, since it is larger than the sum of its proper divisors (33281).

89172199 is a wasteful number, since it uses less digits than its factorization.

89172199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33280.

The product of its digits is 81648, while the sum is 46.

The square root of 89172199 is about 9443.1032505210. The cubic root of 89172199 is about 446.7622733514.

The spelling of 89172199 in words is "eighty-nine million, one hundred seventy-two thousand, one hundred ninety-nine".