13873869 has 16 divisors (see below), whose sum is σ = 20838400. Its totient is φ = 9121248.

The previous prime is 13873829. The next prime is 13873877. The reversal of 13873869 is 96837831.

It is a happy number.

It is not a de Polignac number, because 13873869 - 2⁹ = 13873357 is a prime.

It is a super-2 number, since 2×13873869² = 384968482058322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13873829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1549 + ... + 5490.

It is an arithmetic number, because the mean of its divisors is an integer number (1302400).

Almost surely, 2^13873869 is an apocalyptic number.

It is an amenable number.

13873869 is a deficient number, since it is larger than the sum of its proper divisors (6964531).

13873869 is an equidigital number, since it uses as much as digits as its factorization.

13873869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7121 (or 7115 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 13873869 is about 3724.7642878443. The cubic root of 13873869 is about 240.2882474173.

The spelling of 13873869 in words is "thirteen million, eight hundred seventy-three thousand, eight hundred sixty-nine".