8990218529 has 4 divisors (see below), whose sum is σ = 8991009984. Its totient is φ = 8989427076.

The previous prime is 8990218493. The next prime is 8990218571. The reversal of 8990218529 is 9258120998.

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 a de Polignac number, because none of the positive numbers 2^k-8990218529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8990218229) 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, 378437 + ... + 401490.

It is an arithmetic number, because the mean of its divisors is an integer number (2247752496).

Almost surely, 2^8990218529 is an apocalyptic number.

It is an amenable number.

8990218529 is a deficient number, since it is larger than the sum of its proper divisors (791455).

8990218529 is a wasteful number, since it uses less digits than its factorization.

8990218529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791454.

The product of its (nonzero) digits is 933120, while the sum is 53.

The square root of 8990218529 is about 94816.7629114177. The cubic root of 8990218529 is about 2079.3299839767.

The spelling of 8990218529 in words is "eight billion, nine hundred ninety million, two hundred eighteen thousand, five hundred twenty-nine".