9979000 has 64 divisors (see below), whose sum is σ = 24766560. Its totient is φ = 3750400.

The previous prime is 9978989. The next prime is 9979019. The reversal of 9979000 is 9799.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16707 + ... + 17293.

Almost surely, 2^9979000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9979000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12383280).

9979000 is an abundant number, since it is smaller than the sum of its proper divisors (14787560).

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

9979000 is a wasteful number, since it uses less digits than its factorization.

9979000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625 (or 611 counting only the distinct ones).

The product of its (nonzero) digits is 5103, while the sum is 34.

The square root of 9979000 is about 3158.9555235869. The cubic root of 9979000 is about 215.2925528843.

The spelling of 9979000 in words is "nine million, nine hundred seventy-nine thousand".