13389397 has 6 divisors (see below), whose sum is σ = 15575478. Its totient is φ = 11476584.

The previous prime is 13389391. The next prime is 13389403. The reversal of 13389397 is 79398331.

13389397 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13389391) and next prime (13389403).

It can be written as a sum of positive squares in only one way, i.e., 12103441 + 1285956 = 3479^2 + 1134^2 .

It is not a de Polignac number, because 13389397 - 2⁷ = 13389269 is a prime.

It is a Duffinian number.

13389397 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13389391) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 136578 + ... + 136675.

It is an arithmetic number, because the mean of its divisors is an integer number (2595913).

Almost surely, 2^13389397 is an apocalyptic number.

It is an amenable number.

13389397 is a deficient number, since it is larger than the sum of its proper divisors (2186081).

13389397 is an equidigital number, since it uses as much as digits as its factorization.

13389397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273267 (or 273260 counting only the distinct ones).

The product of its digits is 122472, while the sum is 43.

The square root of 13389397 is about 3659.1524975054. The cubic root of 13389397 is about 237.4581096940.

The spelling of 13389397 in words is "thirteen million, three hundred eighty-nine thousand, three hundred ninety-seven".