79422491 has 2 divisors, whose sum is σ = 79422492. Its totient is φ = 79422490.

The previous prime is 79422481. The next prime is 79422559. The reversal of 79422491 is 19422497.

It is a weak prime.

It is an emirp because it is prime and its reverse (19422497) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79422491 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (79422481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39711245 + 39711246.

It is an arithmetic number, because the mean of its divisors is an integer number (39711246).

Almost surely, 2^79422491 is an apocalyptic number.

79422491 is a deficient number, since it is larger than the sum of its proper divisors (1).

79422491 is an equidigital number, since it uses as much as digits as its factorization.

79422491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 38.

The square root of 79422491 is about 8911.9297012488. The cubic root of 79422491 is about 429.8475951693.

The spelling of 79422491 in words is "seventy-nine million, four hundred twenty-two thousand, four hundred ninety-one".