989886951 has 6 divisors (see below), whose sum is σ = 1429836720. Its totient is φ = 659924628.

The previous prime is 989886943. The next prime is 989886973. The reversal of 989886951 is 159688989.

It is not a de Polignac number, because 989886951 - 2³ = 989886943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989886941) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54993711 + ... + 54993728.

It is an arithmetic number, because the mean of its divisors is an integer number (238306120).

Almost surely, 2^989886951 is an apocalyptic number.

989886951 is a deficient number, since it is larger than the sum of its proper divisors (439949769).

989886951 is a wasteful number, since it uses less digits than its factorization.

989886951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109987445 (or 109987442 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 63.

The square root of 989886951 is about 31462.4689272791. The cubic root of 989886951 is about 996.6175556362.

The spelling of 989886951 in words is "nine hundred eighty-nine million, eight hundred eighty-six thousand, nine hundred fifty-one".