79429279 has 2 divisors, whose sum is σ = 79429280. Its totient is φ = 79429278.

The previous prime is 79429277. The next prime is 79429297. The reversal of 79429279 is 97292497.

It is a happy number.

Together with next prime (79429297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79429279 - 2¹ = 79429277 is a prime.

Together with 79429277, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79429277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39714639 + 39714640.

It is an arithmetic number, because the mean of its divisors is an integer number (39714640).

Almost surely, 2^79429279 is an apocalyptic number.

79429279 is a deficient number, since it is larger than the sum of its proper divisors (1).

79429279 is an equidigital number, since it uses as much as digits as its factorization.

79429279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 571536, while the sum is 49.

The square root of 79429279 is about 8912.3105309454. The cubic root of 79429279 is about 429.8598407449.

The spelling of 79429279 in words is "seventy-nine million, four hundred twenty-nine thousand, two hundred seventy-nine".