13443389 has 2 divisors, whose sum is σ = 13443390. Its totient is φ = 13443388.

The previous prime is 13443383. The next prime is 13443407. The reversal of 13443389 is 98334431.

13443389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12602500 + 840889 = 3550^2 + 917^2 .

It is a cyclic number.

It is not a de Polignac number, because 13443389 - 2¹⁶ = 13377853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13443383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6721694 + 6721695.

It is an arithmetic number, because the mean of its divisors is an integer number (6721695).

Almost surely, 2^13443389 is an apocalyptic number.

It is an amenable number.

13443389 is a deficient number, since it is larger than the sum of its proper divisors (1).

13443389 is an equidigital number, since it uses as much as digits as its factorization.

13443389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 35.

The square root of 13443389 is about 3666.5227395995. The cubic root of 13443389 is about 237.7768605099.

The spelling of 13443389 in words is "thirteen million, four hundred forty-three thousand, three hundred eighty-nine".