13949213 has 2 divisors, whose sum is σ = 13949214. Its totient is φ = 13949212.

The previous prime is 13949209. The next prime is 13949227. The reversal of 13949213 is 31294931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13935289 + 13924 = 3733^2 + 118^2 .

It is a cyclic number.

It is not a de Polignac number, because 13949213 - 2² = 13949209 is a prime.

It is a super-3 number, since 3×13949213³ (a number of 22 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13949213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13949233) 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, 6974606 + 6974607.

It is an arithmetic number, because the mean of its divisors is an integer number (6974607).

Almost surely, 2^13949213 is an apocalyptic number.

It is an amenable number.

13949213 is a deficient number, since it is larger than the sum of its proper divisors (1).

13949213 is an equidigital number, since it uses as much as digits as its factorization.

13949213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 32.

The square root of 13949213 is about 3734.8645223087. The cubic root of 13949213 is about 240.7224354491.

The spelling of 13949213 in words is "thirteen million, nine hundred forty-nine thousand, two hundred thirteen".