13969493 has 2 divisors, whose sum is σ = 13969494. Its totient is φ = 13969492.

The previous prime is 13969469. The next prime is 13969507. The reversal of 13969493 is 39496931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13235044 + 734449 = 3638^2 + 857^2 .

It is an emirp because it is prime and its reverse (39496931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13969493 - 2⁶ = 13969429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13969093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6984746 + 6984747.

It is an arithmetic number, because the mean of its divisors is an integer number (6984747).

Almost surely, 2^13969493 is an apocalyptic number.

It is an amenable number.

13969493 is a deficient number, since it is larger than the sum of its proper divisors (1).

13969493 is an equidigital number, since it uses as much as digits as its factorization.

13969493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 157464, while the sum is 44.

The square root of 13969493 is about 3737.5784941590. The cubic root of 13969493 is about 240.8390367006.

The spelling of 13969493 in words is "thirteen million, nine hundred sixty-nine thousand, four hundred ninety-three".