89445191 has 8 divisors (see below), whose sum is σ = 97645824. Its totient is φ = 81256120.

The previous prime is 89445173. The next prime is 89445197. The reversal of 89445191 is 19154498.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-89445191 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 (89445197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25256 + ... + 28578.

It is an arithmetic number, because the mean of its divisors is an integer number (12205728).

Almost surely, 2^89445191 is an apocalyptic number.

89445191 is a deficient number, since it is larger than the sum of its proper divisors (8200633).

89445191 is a wasteful number, since it uses less digits than its factorization.

89445191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5781.

The product of its digits is 51840, while the sum is 41.

The square root of 89445191 is about 9457.5467749306. The cubic root of 89445191 is about 447.2177152954.

The spelling of 89445191 in words is "eighty-nine million, four hundred forty-five thousand, one hundred ninety-one".