989999152 has 20 divisors (see below), whose sum is σ = 1920994360. Its totient is φ = 494258688.

The previous prime is 989999141. The next prime is 989999159. The reversal of 989999152 is 251999989.

It is not an unprimeable number, because it can be changed into a prime (989999159) 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, 35202 + ... + 56737.

It is an arithmetic number, because the mean of its divisors is an integer number (96049718).

Almost surely, 2^989999152 is an apocalyptic number.

It is an amenable number.

989999152 is a deficient number, since it is larger than the sum of its proper divisors (930995208).

989999152 is a wasteful number, since it uses less digits than its factorization.

989999152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92620 (or 92614 counting only the distinct ones).

The product of its digits is 4723920, while the sum is 61.

The square root of 989999152 is about 31464.2519694971. The cubic root of 989999152 is about 996.6552088456.

The spelling of 989999152 in words is "nine hundred eighty-nine million, nine hundred ninety-nine thousand, one hundred fifty-two".