89389187 has 4 divisors (see below), whose sum is σ = 89419920. Its totient is φ = 89358456.

The previous prime is 89389177. The next prime is 89389193. The reversal of 89389187 is 78198398.

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 89389187 - 2²⁰ = 88340611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89389177) 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, 10487 + ... + 16992.

It is an arithmetic number, because the mean of its divisors is an integer number (22354980).

Almost surely, 2^89389187 is an apocalyptic number.

89389187 is a deficient number, since it is larger than the sum of its proper divisors (30733).

89389187 is a wasteful number, since it uses less digits than its factorization.

89389187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30732.

The product of its digits is 870912, while the sum is 53.

The square root of 89389187 is about 9454.5855012264. The cubic root of 89389187 is about 447.1243575278.

The spelling of 89389187 in words is "eighty-nine million, three hundred eighty-nine thousand, one hundred eighty-seven".