13897269 has 12 divisors (see below), whose sum is σ = 20721792. Its totient is φ = 8965800.

The previous prime is 13897253. The next prime is 13897277. The reversal of 13897269 is 96279831.

13897269 is a `hidden beast` number, since 1 + 389 + 7 + 269 = 666.

It is not a de Polignac number, because 13897269 - 2⁴ = 13897253 is a prime.

It is a super-2 number, since 2×13897269² = 386268171316722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13897369) 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 in 11 ways as a sum of consecutive naturals, for example, 24627 + ... + 25184.

It is an arithmetic number, because the mean of its divisors is an integer number (1726816).

Almost surely, 2^13897269 is an apocalyptic number.

It is an amenable number.

13897269 is a deficient number, since it is larger than the sum of its proper divisors (6824523).

13897269 is a wasteful number, since it uses less digits than its factorization.

13897269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49848 (or 49845 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 13897269 is about 3727.9041028438. The cubic root of 13897269 is about 240.4232635112.

The spelling of 13897269 in words is "thirteen million, eight hundred ninety-seven thousand, two hundred sixty-nine".