9979538 has 16 divisors (see below), whose sum is σ = 15704280. Its totient is φ = 4749696.

The previous prime is 9979537. The next prime is 9979549. The reversal of 9979538 is 8359799.

It can be written as a sum of positive squares in 4 ways, for example, as 7524049 + 2455489 = 2743^2 + 1567^2 .

It is not an unprimeable number, because it can be changed into a prime (9979537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3056 + ... + 5412.

Almost surely, 2^9979538 is an apocalyptic number.

9979538 is a deficient number, since it is larger than the sum of its proper divisors (5724742).

9979538 is a wasteful number, since it uses less digits than its factorization.

9979538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2461.

The product of its digits is 612360, while the sum is 50.

The square root of 9979538 is about 3159.0406771677. The cubic root of 9979538 is about 215.2964218528.

The spelling of 9979538 in words is "nine million, nine hundred seventy-nine thousand, five hundred thirty-eight".