9973979 has 8 divisors (see below), whose sum is σ = 10483440. Its totient is φ = 9477216.

The previous prime is 9973967. The next prime is 9973981. The reversal of 9973979 is 9793799.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9973979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9973979.

It is not an unprimeable number, because it can be changed into a prime (9973919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1544 + ... + 4725.

It is an arithmetic number, because the mean of its divisors is an integer number (1310430).

Almost surely, 2^9973979 is an apocalyptic number.

9973979 is a deficient number, since it is larger than the sum of its proper divisors (509461).

9973979 is a wasteful number, since it uses less digits than its factorization.

9973979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6349.

The product of its digits is 964467, while the sum is 53.

The square root of 9973979 is about 3158.1606988879. The cubic root of 9973979 is about 215.2564382014.

The spelling of 9973979 in words is "nine million, nine hundred seventy-three thousand, nine hundred seventy-nine".