9021169920 has 144 divisors (see below), whose sum is σ = 32927368320. Its totient is φ = 2061975552.

The previous prime is 9021169879. The next prime is 9021169921. The reversal of 9021169920 is 299611209.

It is not an unprimeable number, because it can be changed into a prime (9021169921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140925 + ... + 194684.

It is an arithmetic number, because the mean of its divisors is an integer number (228662280).

Almost surely, 2^9021169920 is an apocalyptic number.

It is an amenable number.

9021169920 is an abundant number, since it is smaller than the sum of its proper divisors (23906198400).

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

9021169920 is a wasteful number, since it uses less digits than its factorization.

9021169920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335640 (or 335626 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 9021169920 is about 94979.8395450319. The cubic root of 9021169920 is about 2081.7134795868.

The spelling of 9021169920 in words is "nine billion, twenty-one million, one hundred sixty-nine thousand, nine hundred twenty".