8891124479 has 4 divisors (see below), whose sum is σ = 9036880680. Its totient is φ = 8745368280.

The previous prime is 8891124391. The next prime is 8891124481. The reversal of 8891124479 is 9744211988.

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-8891124479 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8891124479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8891124379) 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, 72878009 + ... + 72878130.

It is an arithmetic number, because the mean of its divisors is an integer number (2259220170).

Almost surely, 2^8891124479 is an apocalyptic number.

8891124479 is a deficient number, since it is larger than the sum of its proper divisors (145756201).

8891124479 is a wasteful number, since it uses less digits than its factorization.

8891124479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145756200.

The product of its digits is 1161216, while the sum is 53.

The square root of 8891124479 is about 94292.7594197985. The cubic root of 8891124479 is about 2071.6619852023.

The spelling of 8891124479 in words is "eight billion, eight hundred ninety-one million, one hundred twenty-four thousand, four hundred seventy-nine".