79273729 has 2 divisors, whose sum is σ = 79273730. Its totient is φ = 79273728.

The previous prime is 79273687. The next prime is 79273741. The reversal of 79273729 is 92737297.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47238129 + 32035600 = 6873^2 + 5660^2 .

It is a cyclic number.

It is not a de Polignac number, because 79273729 - 2¹⁹ = 78749441 is a prime.

It is not a weakly prime, because it can be changed into another prime (79273759) 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 as a sum of consecutive naturals, namely, 39636864 + 39636865.

It is an arithmetic number, because the mean of its divisors is an integer number (39636865).

Almost surely, 2^79273729 is an apocalyptic number.

It is an amenable number.

79273729 is a deficient number, since it is larger than the sum of its proper divisors (1).

79273729 is an equidigital number, since it uses as much as digits as its factorization.

79273729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 333396, while the sum is 46.

The square root of 79273729 is about 8903.5795610530. The cubic root of 79273729 is about 429.5790526246.

The spelling of 79273729 in words is "seventy-nine million, two hundred seventy-three thousand, seven hundred twenty-nine".