79486399 has 2 divisors, whose sum is σ = 79486400. Its totient is φ = 79486398.

The previous prime is 79486391. The next prime is 79486423. The reversal of 79486399 is 99368497.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79486399 - 2³ = 79486391 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79486391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39743199 + 39743200.

It is an arithmetic number, because the mean of its divisors is an integer number (39743200).

Almost surely, 2^79486399 is an apocalyptic number.

79486399 is a deficient number, since it is larger than the sum of its proper divisors (1).

79486399 is an equidigital number, since it uses as much as digits as its factorization.

79486399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2939328, while the sum is 55.

The square root of 79486399 is about 8915.5145112327. The cubic root of 79486399 is about 429.9628577978.

The spelling of 79486399 in words is "seventy-nine million, four hundred eighty-six thousand, three hundred ninety-nine".