989905113 has 24 divisors (see below), whose sum is σ = 1485825536. Its totient is φ = 634392000.

The previous prime is 989905099. The next prime is 989905139. The reversal of 989905113 is 311509989.

It is not a de Polignac number, because 989905113 - 2⁴ = 989905097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (989905153) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30381 + ... + 53877.

Almost surely, 2^989905113 is an apocalyptic number.

989905113 is a gapful number since it is divisible by the number (93) formed by its first and last digit.

It is an amenable number.

989905113 is a deficient number, since it is larger than the sum of its proper divisors (495920423).

989905113 is a wasteful number, since it uses less digits than its factorization.

989905113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23685 (or 23682 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 45.

The square root of 989905113 is about 31462.7575555608. The cubic root of 989905113 is about 996.6236507623.

The spelling of 989905113 in words is "nine hundred eighty-nine million, nine hundred five thousand, one hundred thirteen".