79061399 has 2 divisors, whose sum is σ = 79061400. Its totient is φ = 79061398.

The previous prime is 79061371. The next prime is 79061431. The reversal of 79061399 is 99316097.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79061399 is a prime.

It is a Sophie Germain 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 (79061369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39530699 + 39530700.

It is an arithmetic number, because the mean of its divisors is an integer number (39530700).

Almost surely, 2^79061399 is an apocalyptic number.

79061399 is a deficient number, since it is larger than the sum of its proper divisors (1).

79061399 is an equidigital number, since it uses as much as digits as its factorization.

79061399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91854, while the sum is 44.

The square root of 79061399 is about 8891.6477100704. The cubic root of 79061399 is about 429.1951756514.

The spelling of 79061399 in words is "seventy-nine million, sixty-one thousand, three hundred ninety-nine".