89375991 has 8 divisors (see below), whose sum is σ = 119247744. Its totient is φ = 59544120.

The previous prime is 89375983. The next prime is 89376031. The reversal of 89375991 is 19957398.

It is a happy number.

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

It is not a de Polignac number, because 89375991 - 2³ = 89375983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89375291) 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, 4275 + ... + 14036.

It is an arithmetic number, because the mean of its divisors is an integer number (14905968).

Almost surely, 2^89375991 is an apocalyptic number.

89375991 is a deficient number, since it is larger than the sum of its proper divisors (29871753).

89375991 is a wasteful number, since it uses less digits than its factorization.

89375991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19941.

The product of its digits is 612360, while the sum is 51.

The square root of 89375991 is about 9453.8876130405. The cubic root of 89375991 is about 447.1023543318.

The spelling of 89375991 in words is "eighty-nine million, three hundred seventy-five thousand, nine hundred ninety-one".