79290047 has 2 divisors, whose sum is σ = 79290048. Its totient is φ = 79290046.

The previous prime is 79290017. The next prime is 79290049. The reversal of 79290047 is 74009297.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (74009297) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79290047 - 2²² = 75095743 is a prime.

Together with 79290049, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79290049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39645023 + 39645024.

It is an arithmetic number, because the mean of its divisors is an integer number (39645024).

Almost surely, 2^79290047 is an apocalyptic number.

79290047 is a deficient number, since it is larger than the sum of its proper divisors (1).

79290047 is an equidigital number, since it uses as much as digits as its factorization.

79290047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 79290047 is about 8904.4958869102. The cubic root of 79290047 is about 429.6085259871.

The spelling of 79290047 in words is "seventy-nine million, two hundred ninety thousand, forty-seven".