79919497 has 4 divisors (see below), whose sum is σ = 91336576. Its totient is φ = 68502420.

The previous prime is 79919479. The next prime is 79919531. The reversal of 79919497 is 79491997.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 79919497 - 2⁷ = 79919369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79919407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5708529 + ... + 5708542.

It is an arithmetic number, because the mean of its divisors is an integer number (22834144).

Almost surely, 2^79919497 is an apocalyptic number.

It is an amenable number.

79919497 is a deficient number, since it is larger than the sum of its proper divisors (11417079).

79919497 is a wasteful number, since it uses less digits than its factorization.

79919497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11417078.

The product of its digits is 1285956, while the sum is 55.

The square root of 79919497 is about 8939.7705227819. The cubic root of 79919497 is about 430.7423574524.

The spelling of 79919497 in words is "seventy-nine million, nine hundred nineteen thousand, four hundred ninety-seven".