9169898987 has 8 divisors (see below), whose sum is σ = 9240222480. Its totient is φ = 9099747360.

The previous prime is 9169898971. The next prime is 9169898989. The reversal of 9169898987 is 7898989619.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9169898987 - 2⁴ = 9169898971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9169898989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65189 + ... + 150297.

It is an arithmetic number, because the mean of its divisors is an integer number (1155027810).

Almost surely, 2^9169898987 is an apocalyptic number.

9169898987 is a deficient number, since it is larger than the sum of its proper divisors (70323493).

9169898987 is a wasteful number, since it uses less digits than its factorization.

9169898987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85933.

The product of its digits is 141087744, while the sum is 74.

The square root of 9169898987 is about 95759.5895302397. The cubic root of 9169898987 is about 2093.0913546217.

The spelling of 9169898987 in words is "nine billion, one hundred sixty-nine million, eight hundred ninety-eight thousand, nine hundred eighty-seven".