79481279 has 2 divisors, whose sum is σ = 79481280. Its totient is φ = 79481278.

The previous prime is 79481267. The next prime is 79481287. The reversal of 79481279 is 97218497.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79481279 - 2⁸ = 79481023 is a prime.

It is a super-2 number, since 2×79481279² = 12634547422951682, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79481249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39740639 + 39740640.

It is an arithmetic number, because the mean of its divisors is an integer number (39740640).

Almost surely, 2^79481279 is an apocalyptic number.

79481279 is a deficient number, since it is larger than the sum of its proper divisors (1).

79481279 is an equidigital number, since it uses as much as digits as its factorization.

79481279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 47.

The square root of 79481279 is about 8915.2273667024. The cubic root of 79481279 is about 429.9536257903.

The spelling of 79481279 in words is "seventy-nine million, four hundred eighty-one thousand, two hundred seventy-nine".