89394937931 has 4 divisors (see below), whose sum is σ = 96271471632. Its totient is φ = 82518404232.

The previous prime is 89394937909. The next prime is 89394937969. The reversal of 89394937931 is 13973949398.

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-89394937931 is a prime.

It is a super-2 number, since 2×89394937931² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89394937831) 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, 3438266831 + ... + 3438266856.

It is an arithmetic number, because the mean of its divisors is an integer number (24067867908).

Almost surely, 2^89394937931 is an apocalyptic number.

89394937931 is a deficient number, since it is larger than the sum of its proper divisors (6876533701).

89394937931 is a wasteful number, since it uses less digits than its factorization.

89394937931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6876533700.

The product of its digits is 39680928, while the sum is 65.

The spelling of 89394937931 in words is "eighty-nine billion, three hundred ninety-four million, nine hundred thirty-seven thousand, nine hundred thirty-one".