8949999672 has 96 divisors (see below), whose sum is σ = 24488100000. Its totient is φ = 2952910080.

The previous prime is 8949999613. The next prime is 8949999689. The reversal of 8949999672 is 2769999498.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 8949999672.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2982829 + ... + 2985827.

It is an arithmetic number, because the mean of its divisors is an integer number (255084375).

Almost surely, 2^8949999672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8949999672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12244050000).

8949999672 is an abundant number, since it is smaller than the sum of its proper divisors (15538100328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8949999672 is a wasteful number, since it uses less digits than its factorization.

8949999672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3421 (or 3414 counting only the distinct ones).

The product of its digits is 158723712, while the sum is 72.

The square root of 8949999672 is about 94604.4379085886. The cubic root of 8949999672 is about 2076.2246351642.

The spelling of 8949999672 in words is "eight billion, nine hundred forty-nine million, nine hundred ninety-nine thousand, six hundred seventy-two".