13945493 has 2 divisors, whose sum is σ = 13945494. Its totient is φ = 13945492.

The previous prime is 13945471. The next prime is 13945531. The reversal of 13945493 is 39454931.

13945493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (13945531) can be obtained adding 13945493 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7091569 + 6853924 = 2663^2 + 2618^2 .

It is an emirp because it is prime and its reverse (39454931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13945493 - 2⁸ = 13945237 is a 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 (13945403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6972746 + 6972747.

It is an arithmetic number, because the mean of its divisors is an integer number (6972747).

Almost surely, 2^13945493 is an apocalyptic number.

It is an amenable number.

13945493 is a deficient number, since it is larger than the sum of its proper divisors (1).

13945493 is an equidigital number, since it uses as much as digits as its factorization.

13945493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 38.

The square root of 13945493 is about 3734.3664790698. The cubic root of 13945493 is about 240.7010347896.

The spelling of 13945493 in words is "thirteen million, nine hundred forty-five thousand, four hundred ninety-three".