79228213 has 2 divisors, whose sum is σ = 79228214. Its totient is φ = 79228212.

The previous prime is 79228207. The next prime is 79228223. The reversal of 79228213 is 31282297.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72556324 + 6671889 = 8518^2 + 2583^2 .

It is a cyclic number.

It is not a de Polignac number, because 79228213 - 2⁵ = 79228181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79228223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39614106 + 39614107.

It is an arithmetic number, because the mean of its divisors is an integer number (39614107).

Almost surely, 2^79228213 is an apocalyptic number.

It is an amenable number.

79228213 is a deficient number, since it is larger than the sum of its proper divisors (1).

79228213 is an equidigital number, since it uses as much as digits as its factorization.

79228213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 34.

The square root of 79228213 is about 8901.0231434369. The cubic root of 79228213 is about 429.4968208279.

The spelling of 79228213 in words is "seventy-nine million, two hundred twenty-eight thousand, two hundred thirteen".