13601389 has 2 divisors, whose sum is σ = 13601390. Its totient is φ = 13601388.

The previous prime is 13601363. The next prime is 13601407. The reversal of 13601389 is 98310631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12369289 + 1232100 = 3517^2 + 1110^2 .

It is an emirp because it is prime and its reverse (98310631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13601389 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13601389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13601339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6800694 + 6800695.

It is an arithmetic number, because the mean of its divisors is an integer number (6800695).

Almost surely, 2^13601389 is an apocalyptic number.

It is an amenable number.

13601389 is a deficient number, since it is larger than the sum of its proper divisors (1).

13601389 is an equidigital number, since it uses as much as digits as its factorization.

13601389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 13601389 is about 3688.0061008626. The cubic root of 13601389 is about 238.7047643253.

The spelling of 13601389 in words is "thirteen million, six hundred one thousand, three hundred eighty-nine".