79411391 has 2 divisors, whose sum is σ = 79411392. Its totient is φ = 79411390.

The previous prime is 79411379. The next prime is 79411417. The reversal of 79411391 is 19311497.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (19311497) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79411391 - 2²⁶ = 12302527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79410391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39705695 + 39705696.

It is an arithmetic number, because the mean of its divisors is an integer number (39705696).

Almost surely, 2^79411391 is an apocalyptic number.

79411391 is a deficient number, since it is larger than the sum of its proper divisors (1).

79411391 is an equidigital number, since it uses as much as digits as its factorization.

79411391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6804, while the sum is 35.

The square root of 79411391 is about 8911.3069187409. The cubic root of 79411391 is about 429.8275692273.

The spelling of 79411391 in words is "seventy-nine million, four hundred eleven thousand, three hundred ninety-one".