9933979 has 24 divisors (see below), whose sum is σ = 11970000. Its totient is φ = 8205120.

The previous prime is 9933977. The next prime is 9933983. The reversal of 9933979 is 9793399.

It is a happy number.

It is not a de Polignac number, because 9933979 - 2¹ = 9933977 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9933971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66597 + ... + 66745.

It is an arithmetic number, because the mean of its divisors is an integer number (498750).

Almost surely, 2^9933979 is an apocalyptic number.

9933979 is a deficient number, since it is larger than the sum of its proper divisors (2036021).

9933979 is a wasteful number, since it uses less digits than its factorization.

9933979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219 (or 208 counting only the distinct ones).

The product of its digits is 413343, while the sum is 49.

The square root of 9933979 is about 3151.8215368260. The cubic root of 9933979 is about 214.9682953069.

The spelling of 9933979 in words is "nine million, nine hundred thirty-three thousand, nine hundred seventy-nine".