79042279 has 2 divisors, whose sum is σ = 79042280. Its totient is φ = 79042278.

The previous prime is 79042273. The next prime is 79042289. The reversal of 79042279 is 97224097.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79042279 - 2⁵ = 79042247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79042273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39521139 + 39521140.

It is an arithmetic number, because the mean of its divisors is an integer number (39521140).

Almost surely, 2^79042279 is an apocalyptic number.

79042279 is a deficient number, since it is larger than the sum of its proper divisors (1).

79042279 is an equidigital number, since it uses as much as digits as its factorization.

79042279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 79042279 is about 8890.5724787552. The cubic root of 79042279 is about 429.1605743859.

The spelling of 79042279 in words is "seventy-nine million, forty-two thousand, two hundred seventy-nine".