9969988 has 24 divisors (see below), whose sum is σ = 20139392. Its totient is φ = 4230144.

The previous prime is 9969959. The next prime is 9970001. The reversal of 9969988 is 8899699.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1156 + ... + 4612.

Almost surely, 2^9969988 is an apocalyptic number.

It is an amenable number.

9969988 is an abundant number, since it is smaller than the sum of its proper divisors (10169404).

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

9969988 is a wasteful number, since it uses less digits than its factorization.

9969988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3571 (or 3569 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 58.

The square root of 9969988 is about 3157.5287805498. The cubic root of 9969988 is about 215.2277233807.

The spelling of 9969988 in words is "nine million, nine hundred sixty-nine thousand, nine hundred eighty-eight".