6840199 has 2 divisors, whose sum is σ = 6840200. Its totient is φ = 6840198.

The previous prime is 6840187. The next prime is 6840203. The reversal of 6840199 is 9910486.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6840199 - 2⁵ = 6840167 is a prime.

6840199 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6840109) 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, 3420099 + 3420100.

It is an arithmetic number, because the mean of its divisors is an integer number (3420100).

Almost surely, 2^6840199 is an apocalyptic number.

6840199 is a deficient number, since it is larger than the sum of its proper divisors (1).

6840199 is an equidigital number, since it uses as much as digits as its factorization.

6840199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 6840199 is about 2615.3774106236. The cubic root of 6840199 is about 189.8262400324.

The spelling of 6840199 in words is "six million, eight hundred forty thousand, one hundred ninety-nine".