9979013 has 4 divisors (see below), whose sum is σ = 10886208. Its totient is φ = 9071820.

The previous prime is 9978989. The next prime is 9979019. The reversal of 9979013 is 3109799.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9979013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9979019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 453581 + ... + 453602.

It is an arithmetic number, because the mean of its divisors is an integer number (2721552).

Almost surely, 2^9979013 is an apocalyptic number.

It is an amenable number.

9979013 is a deficient number, since it is larger than the sum of its proper divisors (907195).

9979013 is a wasteful number, since it uses less digits than its factorization.

9979013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907194.

The product of its (nonzero) digits is 15309, while the sum is 38.

The square root of 9979013 is about 3158.9575812283. The cubic root of 9979013 is about 215.2926463740.

It can be divided in two parts, 99 and 79013, that multiplied together give a palindrome (7822287).

The spelling of 9979013 in words is "nine million, nine hundred seventy-nine thousand, thirteen".