987899922 has 16 divisors (see below), whose sum is σ = 2195333280. Its totient is φ = 329299956.

The previous prime is 987899921. The next prime is 987899923. The reversal of 987899922 is 229998789.

It is an interprime number because it is at equal distance from previous prime (987899921) and next prime (987899923).

It is a self number, because there is not a number n which added to its sum of digits gives 987899922.

It is not an unprimeable number, because it can be changed into a prime (987899921) 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, 9147168 + ... + 9147275.

It is an arithmetic number, because the mean of its divisors is an integer number (137208330).

Almost surely, 2^987899922 is an apocalyptic number.

987899922 is an abundant number, since it is smaller than the sum of its proper divisors (1207433358).

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

987899922 is a wasteful number, since it uses less digits than its factorization.

987899922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18294454 (or 18294448 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 63.

The square root of 987899922 is about 31430.8752980250. The cubic root of 987899922 is about 995.9502624314.

The spelling of 987899922 in words is "nine hundred eighty-seven million, eight hundred ninety-nine thousand, nine hundred twenty-two".