79368281 has 2 divisors, whose sum is σ = 79368282. Its totient is φ = 79368280.

The previous prime is 79368229. The next prime is 79368287. The reversal of 79368281 is 18286397.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68740681 + 10627600 = 8291^2 + 3260^2 .

It is a cyclic number.

It is not a de Polignac number, because 79368281 - 2⁶ = 79368217 is a prime.

It is a super-2 number, since 2×79368281² = 12598648057789922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (79368287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39684140 + 39684141.

It is an arithmetic number, because the mean of its divisors is an integer number (39684141).

Almost surely, 2^79368281 is an apocalyptic number.

It is an amenable number.

79368281 is a deficient number, since it is larger than the sum of its proper divisors (1).

79368281 is an equidigital number, since it uses as much as digits as its factorization.

79368281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 44.

The square root of 79368281 is about 8908.8877532496. The cubic root of 79368281 is about 429.7497750956.

The spelling of 79368281 in words is "seventy-nine million, three hundred sixty-eight thousand, two hundred eighty-one".