79245919 has 2 divisors, whose sum is σ = 79245920. Its totient is φ = 79245918.

The previous prime is 79245911. The next prime is 79245973. The reversal of 79245919 is 91954297.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (91954297) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79245919 - 2³ = 79245911 is a prime.

It is a super-2 number, since 2×79245919² = 12559831356309122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79245911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39622959 + 39622960.

It is an arithmetic number, because the mean of its divisors is an integer number (39622960).

Almost surely, 2^79245919 is an apocalyptic number.

79245919 is a deficient number, since it is larger than the sum of its proper divisors (1).

79245919 is an equidigital number, since it uses as much as digits as its factorization.

79245919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 46.

The square root of 79245919 is about 8902.0176926358. The cubic root of 79245919 is about 429.5288132373.

The spelling of 79245919 in words is "seventy-nine million, two hundred forty-five thousand, nine hundred nineteen".