79388873 has 2 divisors, whose sum is σ = 79388874. Its totient is φ = 79388872.

The previous prime is 79388867. The next prime is 79388899. The reversal of 79388873 is 37888397.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69422224 + 9966649 = 8332^2 + 3157^2 .

It is an emirp because it is prime and its reverse (37888397) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79388873 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (79388173) 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, 39694436 + 39694437.

It is an arithmetic number, because the mean of its divisors is an integer number (39694437).

Almost surely, 2^79388873 is an apocalyptic number.

It is an amenable number.

79388873 is a deficient number, since it is larger than the sum of its proper divisors (1).

79388873 is an equidigital number, since it uses as much as digits as its factorization.

79388873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 53.

The square root of 79388873 is about 8910.0433781211. The cubic root of 79388873 is about 429.7869378935.

The spelling of 79388873 in words is "seventy-nine million, three hundred eighty-eight thousand, eight hundred seventy-three".