89985738239 has 4 divisors (see below), whose sum is σ = 93088694760. Its totient is φ = 86882781720.

The previous prime is 89985738229. The next prime is 89985738259. The reversal of 89985738239 is 93283758998.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89985738239 is a prime.

It is a super-2 number, since 2×89985738239² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89985738229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1551478217 + ... + 1551478274.

It is an arithmetic number, because the mean of its divisors is an integer number (23272173690).

Almost surely, 2^89985738239 is an apocalyptic number.

89985738239 is a deficient number, since it is larger than the sum of its proper divisors (3102956521).

89985738239 is a wasteful number, since it uses less digits than its factorization.

89985738239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3102956520.

The product of its digits is 235146240, while the sum is 71.

The spelling of 89985738239 in words is "eighty-nine billion, nine hundred eighty-five million, seven hundred thirty-eight thousand, two hundred thirty-nine".