79273321 has 2 divisors, whose sum is σ = 79273322. Its totient is φ = 79273320.

The previous prime is 79273309. The next prime is 79273331. The reversal of 79273321 is 12337297.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69538921 + 9734400 = 8339^2 + 3120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79273321 is a prime.

It is not a weakly prime, because it can be changed into another prime (79273331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39636660 + 39636661.

It is an arithmetic number, because the mean of its divisors is an integer number (39636661).

Almost surely, 2^79273321 is an apocalyptic number.

It is an amenable number.

79273321 is a deficient number, since it is larger than the sum of its proper divisors (1).

79273321 is an equidigital number, since it uses as much as digits as its factorization.

79273321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15876, while the sum is 34.

The square root of 79273321 is about 8903.5566488904. The cubic root of 79273321 is about 429.5783156484.

The spelling of 79273321 in words is "seventy-nine million, two hundred seventy-three thousand, three hundred twenty-one".