7898989875 has 160 divisors (see below), whose sum is σ = 15884224512. Its totient is φ = 3482136000.

The previous prime is 7898989867. The next prime is 7898989919. The reversal of 7898989875 is 5789898987.

It is a happy number.

It is not a de Polignac number, because 7898989875 - 2³ = 7898989867 is a prime.

Its product of digits (731566080) is a multiple of the sum of its prime factors (360).

It is a self number, because there is not a number n which added to its sum of digits gives 7898989875.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 27911484 + ... + 27911766.

Almost surely, 2^7898989875 is an apocalyptic number.

7898989875 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

7898989875 is an abundant number, since it is smaller than the sum of its proper divisors (7985234637).

7898989875 is an equidigital number, since it uses as much as digits as its factorization.

7898989875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360 (or 329 counting only the distinct ones).

The product of its digits is 731566080, while the sum is 78.

The square root of 7898989875 is about 88876.2615944213. The cubic root of 7898989875 is about 1991.5468117235.

The spelling of 7898989875 in words is "seven billion, eight hundred ninety-eight million, nine hundred eighty-nine thousand, eight hundred seventy-five".