9901898024 has 16 divisors (see below), whose sum is σ = 18571518420. Its totient is φ = 4949493120.

The previous prime is 9901897997. The next prime is 9901898029. The reversal of 9901898024 is 4208981099.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8898148900 + 1003749124 = 94330^2 + 31682^2 .

It is not an unprimeable number, because it can be changed into a prime (9901898029) 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, 152807 + ... + 207734.

Almost surely, 2^9901898024 is an apocalyptic number.

It is an amenable number.

9901898024 is a deficient number, since it is larger than the sum of its proper divisors (8669620396).

9901898024 is a wasteful number, since it uses less digits than its factorization.

9901898024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363980 (or 363976 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 50.

The square root of 9901898024 is about 99508.2811830252. The cubic root of 9901898024 is about 2147.3663822201.

The spelling of 9901898024 in words is "nine billion, nine hundred one million, eight hundred ninety-eight thousand, twenty-four".