8899036521 has 4 divisors (see below), whose sum is σ = 11865382032. Its totient is φ = 5932691012.

The previous prime is 8899036519. The next prime is 8899036543. The reversal of 8899036521 is 1256309988.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8899036521 - 2¹ = 8899036519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8899036561) 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, 1483172751 + ... + 1483172756.

It is an arithmetic number, because the mean of its divisors is an integer number (2966345508).

Almost surely, 2^8899036521 is an apocalyptic number.

It is an amenable number.

8899036521 is a deficient number, since it is larger than the sum of its proper divisors (2966345511).

8899036521 is a wasteful number, since it uses less digits than its factorization.

8899036521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2966345510.

The product of its (nonzero) digits is 933120, while the sum is 51.

The square root of 8899036521 is about 94334.7047538709. The cubic root of 8899036521 is about 2072.2763138339.

The spelling of 8899036521 in words is "eight billion, eight hundred ninety-nine million, thirty-six thousand, five hundred twenty-one".