89436973 has 4 divisors (see below), whose sum is σ = 89501248. Its totient is φ = 89372700.

The previous prime is 89436967. The next prime is 89437001. The reversal of 89436973 is 37963498.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89436973 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 (89436923) 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, 30003 + ... + 32848.

It is an arithmetic number, because the mean of its divisors is an integer number (22375312).

Almost surely, 2^89436973 is an apocalyptic number.

It is an amenable number.

89436973 is a deficient number, since it is larger than the sum of its proper divisors (64275).

89436973 is a wasteful number, since it uses less digits than its factorization.

89436973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64274.

The product of its digits is 979776, while the sum is 49.

The square root of 89436973 is about 9457.1122971021. The cubic root of 89436973 is about 447.2040184615.

It can be divided in two parts, 89436 and 973, that added together give a palindrome (90409).

The spelling of 89436973 in words is "eighty-nine million, four hundred thirty-six thousand, nine hundred seventy-three".