89871599 has 4 divisors (see below), whose sum is σ = 89900064. Its totient is φ = 89843136.

The previous prime is 89871583. The next prime is 89871601. The reversal of 89871599 is 99517898.

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 89871599 - 2⁴ = 89871583 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 (89871559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8807 + ... + 16040.

It is an arithmetic number, because the mean of its divisors is an integer number (22475016).

Almost surely, 2^89871599 is an apocalyptic number.

89871599 is a deficient number, since it is larger than the sum of its proper divisors (28465).

89871599 is a wasteful number, since it uses less digits than its factorization.

89871599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28464.

The product of its digits is 1632960, while the sum is 56.

The square root of 89871599 is about 9480.0632381857. The cubic root of 89871599 is about 447.9272558732.

The spelling of 89871599 in words is "eighty-nine million, eight hundred seventy-one thousand, five hundred ninety-nine".