13921269 has 4 divisors (see below), whose sum is σ = 18561696. Its totient is φ = 9280844.

The previous prime is 13921241. The next prime is 13921289. The reversal of 13921269 is 96212931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96212931 = 3 ⋅32070977.

It is a cyclic number.

It is not a de Polignac number, because 13921269 - 2⁸ = 13921013 is a prime.

It is a super-2 number, since 2×13921269² = 387603461140722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13921289) 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, 2320209 + ... + 2320214.

It is an arithmetic number, because the mean of its divisors is an integer number (4640424).

Almost surely, 2^13921269 is an apocalyptic number.

It is an amenable number.

13921269 is a deficient number, since it is larger than the sum of its proper divisors (4640427).

13921269 is an equidigital number, since it uses as much as digits as its factorization.

13921269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4640426.

The product of its digits is 5832, while the sum is 33.

The square root of 13921269 is about 3731.1216812106. The cubic root of 13921269 is about 240.5615842105.

The spelling of 13921269 in words is "thirteen million, nine hundred twenty-one thousand, two hundred sixty-nine".