79660199 has 2 divisors, whose sum is σ = 79660200. Its totient is φ = 79660198.

The previous prime is 79660193. The next prime is 79660211. The reversal of 79660199 is 99106697.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79660199 - 2¹² = 79656103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79660193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39830099 + 39830100.

It is an arithmetic number, because the mean of its divisors is an integer number (39830100).

Almost surely, 2^79660199 is an apocalyptic number.

79660199 is a deficient number, since it is larger than the sum of its proper divisors (1).

79660199 is an equidigital number, since it uses as much as digits as its factorization.

79660199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 183708, while the sum is 47.

The square root of 79660199 is about 8925.2562428201. The cubic root of 79660199 is about 430.2760063231.

The spelling of 79660199 in words is "seventy-nine million, six hundred sixty thousand, one hundred ninety-nine".