89999623 has 6 divisors (see below), whose sum is σ = 104693496. Its totient is φ = 77142492.

The previous prime is 89999597. The next prime is 89999653. The reversal of 89999623 is 32699998.

It is not a de Polignac number, because 89999623 - 2⁹ = 89999111 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 (89999653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 918315 + ... + 918412.

It is an arithmetic number, because the mean of its divisors is an integer number (17448916).

Almost surely, 2^89999623 is an apocalyptic number.

89999623 is a deficient number, since it is larger than the sum of its proper divisors (14693873).

89999623 is a wasteful number, since it uses less digits than its factorization.

89999623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836741 (or 1836734 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 55.

The square root of 89999623 is about 9486.8131108397. The cubic root of 89999623 is about 448.1398489180.

The spelling of 89999623 in words is "eighty-nine million, nine hundred ninety-nine thousand, six hundred twenty-three".