8999165952 has 504 divisors, whose sum is σ = 31466369376. Its totient is φ = 2469003264.

The previous prime is 8999165933. The next prime is 8999165957. The reversal of 8999165952 is 2595619998.

It is a tau number, because it is divible by the number of its divisors (504).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 8999165952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8999165957) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 169795558 + ... + 169795610.

Almost surely, 2^8999165952 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 8999165952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15733184688).

8999165952 is an abundant number, since it is smaller than the sum of its proper divisors (22467203424).

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

8999165952 is a wasteful number, since it uses less digits than its factorization.

8999165952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 112 counting only the distinct ones).

The product of its digits is 15746400, while the sum is 63.

The square root of 8999165952 is about 94863.9338842745. The cubic root of 8999165952 is about 2080.0195658909.

The spelling of 8999165952 in words is "eight billion, nine hundred ninety-nine million, one hundred sixty-five thousand, nine hundred fifty-two".