8989649251 has 16 divisors (see below), whose sum is σ = 10081963008. Its totient is φ = 7945488000.

The previous prime is 8989649243. The next prime is 8989649257. The reversal of 8989649251 is 1529469898.

8989649251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 8989649251 - 2³ = 8989649243 is a prime.

It is a super-2 number, since 2×8989649251² (a number of 21 digits) contains 22 as substring.

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 8989649251.

It is not an unprimeable number, because it can be changed into a prime (8989649257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20491 + ... + 135643.

It is an arithmetic number, because the mean of its divisors is an integer number (630122688).

Almost surely, 2^8989649251 is an apocalyptic number.

8989649251 is a deficient number, since it is larger than the sum of its proper divisors (1092313757).

8989649251 is a wasteful number, since it uses less digits than its factorization.

8989649251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115362.

The product of its digits is 11197440, while the sum is 61.

The square root of 8989649251 is about 94813.7608736200. The cubic root of 8989649251 is about 2079.2860939869.

The spelling of 8989649251 in words is "eight billion, nine hundred eighty-nine million, six hundred forty-nine thousand, two hundred fifty-one".