13827969 has 8 divisors (see below), whose sum is σ = 20485920. Its totient is φ = 9218628.

The previous prime is 13827949. The next prime is 13827971. The reversal of 13827969 is 96972831.

It is not a de Polignac number, because 13827969 - 2⁸ = 13827713 is a prime.

It is a super-2 number, since 2×13827969² = 382425453329922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13827949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256047 + ... + 256100.

It is an arithmetic number, because the mean of its divisors is an integer number (2560740).

Almost surely, 2^13827969 is an apocalyptic number.

It is an amenable number.

13827969 is a deficient number, since it is larger than the sum of its proper divisors (6657951).

13827969 is an equidigital number, since it uses as much as digits as its factorization.

13827969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512156 (or 512150 counting only the distinct ones).

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

The square root of 13827969 is about 3718.5977195712. The cubic root of 13827969 is about 240.0229665522.

The spelling of 13827969 in words is "thirteen million, eight hundred twenty-seven thousand, nine hundred sixty-nine".