9979213 has 2 divisors, whose sum is σ = 9979214. Its totient is φ = 9979212.

The previous prime is 9979183. The next prime is 9979243. The reversal of 9979213 is 3129799.

It is a balanced prime because it is at equal distance from previous prime (9979183) and next prime (9979243).

It can be written as a sum of positive squares in only one way, i.e., 5322249 + 4656964 = 2307^2 + 2158^2 .

It is an emirp because it is prime and its reverse (3129799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9979213 - 2¹⁷ = 9848141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9979243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4989606 + 4989607.

It is an arithmetic number, because the mean of its divisors is an integer number (4989607).

Almost surely, 2^9979213 is an apocalyptic number.

It is an amenable number.

9979213 is a deficient number, since it is larger than the sum of its proper divisors (1).

9979213 is an equidigital number, since it uses as much as digits as its factorization.

9979213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30618, while the sum is 40.

The square root of 9979213 is about 3158.9892370820. The cubic root of 9979213 is about 215.2940846672.

The spelling of 9979213 in words is "nine million, nine hundred seventy-nine thousand, two hundred thirteen".