13956199 has 2 divisors, whose sum is σ = 13956200. Its totient is φ = 13956198.

The previous prime is 13956197. The next prime is 13956233. The reversal of 13956199 is 99165931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13956199 - 2¹ = 13956197 is a prime.

Together with 13956197, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13956197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6978099 + 6978100.

It is an arithmetic number, because the mean of its divisors is an integer number (6978100).

Almost surely, 2^13956199 is an apocalyptic number.

13956199 is a deficient number, since it is larger than the sum of its proper divisors (1).

13956199 is an equidigital number, since it uses as much as digits as its factorization.

13956199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 65610, while the sum is 43.

The square root of 13956199 is about 3735.7996466620. The cubic root of 13956199 is about 240.7626146877.

The spelling of 13956199 in words is "thirteen million, nine hundred fifty-six thousand, one hundred ninety-nine".