9979500 has 48 divisors (see below), whose sum is σ = 29064672. Its totient is φ = 2660800.

The previous prime is 9979471. The next prime is 9979511. The reversal of 9979500 is 59799.

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, 1827 + ... + 4826.

It is an arithmetic number, because the mean of its divisors is an integer number (605514).

Almost surely, 2^9979500 is an apocalyptic number.

It is an amenable number.

9979500 is an abundant number, since it is smaller than the sum of its proper divisors (19085172).

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

9979500 is a wasteful number, since it uses less digits than its factorization.

9979500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6675 (or 6663 counting only the distinct ones).

The product of its (nonzero) digits is 25515, while the sum is 39.

The square root of 9979500 is about 3159.0346626778. The cubic root of 9979500 is about 215.2961485845.

The spelling of 9979500 in words is "nine million, nine hundred seventy-nine thousand, five hundred".