79398497 has 4 divisors (see below), whose sum is σ = 79416516. Its totient is φ = 79380480.

The previous prime is 79398467. The next prime is 79398499. The reversal of 79398497 is 79489397.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25361296 + 54037201 = 5036^2 + 7351^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79398497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79398499) 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, 2513 + ... + 12849.

It is an arithmetic number, because the mean of its divisors is an integer number (19854129).

Almost surely, 2^79398497 is an apocalyptic number.

It is an amenable number.

79398497 is a deficient number, since it is larger than the sum of its proper divisors (18019).

79398497 is a wasteful number, since it uses less digits than its factorization.

79398497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18018.

The product of its digits is 3429216, while the sum is 56.

The square root of 79398497 is about 8910.5834264654. The cubic root of 79398497 is about 429.8043043170.

The spelling of 79398497 in words is "seventy-nine million, three hundred ninety-eight thousand, four hundred ninety-seven".