7879199 has 2 divisors, whose sum is σ = 7879200. Its totient is φ = 7879198.

The previous prime is 7879181. The next prime is 7879219. The reversal of 7879199 is 9919787.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7879199 - 2²⁰ = 6830623 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 (7879169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3939599 + 3939600.

It is an arithmetic number, because the mean of its divisors is an integer number (3939600).

Almost surely, 2^7879199 is an apocalyptic number.

7879199 is a deficient number, since it is larger than the sum of its proper divisors (1).

7879199 is an equidigital number, since it uses as much as digits as its factorization.

7879199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 285768, while the sum is 50.

The square root of 7879199 is about 2806.9910936802. The cubic root of 7879199 is about 198.9882150879.

Adding to 7879199 its sum of digits (50), we get a square (7879249 = 2807²).

The spelling of 7879199 in words is "seven million, eight hundred seventy-nine thousand, one hundred ninety-nine".