8991174485 has 8 divisors (see below), whose sum is σ = 10798311480. Its totient is φ = 7187004864.

The previous prime is 8991174481. The next prime is 8991174487. The reversal of 8991174485 is 5844711998.

It can be written as a sum of positive squares in 4 ways, for example, as 182601169 + 8808573316 = 13513^2 + 93854^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8991174485 - 2² = 8991174481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8991174485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8991174481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 735170 + ... + 747299.

It is an arithmetic number, because the mean of its divisors is an integer number (1349788935).

Almost surely, 2^8991174485 is an apocalyptic number.

It is an amenable number.

8991174485 is a deficient number, since it is larger than the sum of its proper divisors (1807136995).

8991174485 is a wasteful number, since it uses less digits than its factorization.

8991174485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483687.

The product of its digits is 2903040, while the sum is 56.

The square root of 8991174485 is about 94821.8038480602. The cubic root of 8991174485 is about 2079.4036817598.

The spelling of 8991174485 in words is "eight billion, nine hundred ninety-one million, one hundred seventy-four thousand, four hundred eighty-five".