89791712938 has 4 divisors (see below), whose sum is σ = 134687569410. Its totient is φ = 44895856468.

The previous prime is 89791712921. The next prime is 89791712963. The reversal of 89791712938 is 83921719798.

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

It can be written as a sum of positive squares in only one way, i.e., 71729159329 + 18062553609 = 267823^2 + 134397^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 89791712938.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22447928233 + ... + 22447928236.

Almost surely, 2^89791712938 is an apocalyptic number.

89791712938 is a deficient number, since it is larger than the sum of its proper divisors (44895856472).

89791712938 is a wasteful number, since it uses less digits than its factorization.

89791712938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44895856471.

The product of its digits is 13716864, while the sum is 64.

The spelling of 89791712938 in words is "eighty-nine billion, seven hundred ninety-one million, seven hundred twelve thousand, nine hundred thirty-eight".