13897319 has 4 divisors (see below), whose sum is σ = 14236320. Its totient is φ = 13558320.

The previous prime is 13897309. The next prime is 13897321. The reversal of 13897319 is 91379831.

13897319 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13897319 - 2⁸ = 13897063 is a prime.

It is a super-2 number, since 2×13897319² = 386270950775522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 338959 = 13897319 / (1 + 3 + 8 + 9 + 7 + 3 + 1 + 9).

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13897309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169439 + ... + 169520.

It is an arithmetic number, because the mean of its divisors is an integer number (3559080).

Almost surely, 2^13897319 is an apocalyptic number.

13897319 is a deficient number, since it is larger than the sum of its proper divisors (339001).

13897319 is an equidigital number, since it uses as much as digits as its factorization.

13897319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339000.

The product of its digits is 40824, while the sum is 41.

The square root of 13897319 is about 3727.9108090189. The cubic root of 13897319 is about 240.4235518448.

The spelling of 13897319 in words is "thirteen million, eight hundred ninety-seven thousand, three hundred nineteen".