13945369 has 2 divisors, whose sum is σ = 13945370. Its totient is φ = 13945368.

The previous prime is 13945363. The next prime is 13945403. The reversal of 13945369 is 96354931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13286025 + 659344 = 3645^2 + 812^2 .

It is a cyclic number.

It is not a de Polignac number, because 13945369 - 2¹³ = 13937177 is a prime.

It is a super-2 number, since 2×13945369² = 388946633092322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13945363) 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, 6972684 + 6972685.

It is an arithmetic number, because the mean of its divisors is an integer number (6972685).

Almost surely, 2^13945369 is an apocalyptic number.

It is an amenable number.

13945369 is a deficient number, since it is larger than the sum of its proper divisors (1).

13945369 is an equidigital number, since it uses as much as digits as its factorization.

13945369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 40.

The square root of 13945369 is about 3734.3498764845. The cubic root of 13945369 is about 240.7003213687.

The spelling of 13945369 in words is "thirteen million, nine hundred forty-five thousand, three hundred sixty-nine".