79243247 has 2 divisors, whose sum is σ = 79243248. Its totient is φ = 79243246.

The previous prime is 79243231. The next prime is 79243253. The reversal of 79243247 is 74234297.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79243247 - 2⁴ = 79243231 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79243247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79243207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39621623 + 39621624.

It is an arithmetic number, because the mean of its divisors is an integer number (39621624).

Almost surely, 2^79243247 is an apocalyptic number.

79243247 is a deficient number, since it is larger than the sum of its proper divisors (1).

79243247 is an equidigital number, since it uses as much as digits as its factorization.

79243247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 38.

The square root of 79243247 is about 8901.8676130349. The cubic root of 79243247 is about 429.5239855906.

The spelling of 79243247 in words is "seventy-nine million, two hundred forty-three thousand, two hundred forty-seven".