13873239 has 6 divisors (see below), whose sum is σ = 20039136. Its totient is φ = 9248820.

The previous prime is 13873229. The next prime is 13873267. The reversal of 13873239 is 93237831.

It is a happy number.

It is not a de Polignac number, because 13873239 - 2²³ = 5484631 is a prime.

It is a super-2 number, since 2×13873239² = 384933520702242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13873229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 770727 + ... + 770744.

It is an arithmetic number, because the mean of its divisors is an integer number (3339856).

Almost surely, 2^13873239 is an apocalyptic number.

13873239 is a deficient number, since it is larger than the sum of its proper divisors (6165897).

13873239 is a wasteful number, since it uses less digits than its factorization.

13873239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1541477 (or 1541474 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 13873239 is about 3724.6797177744. The cubic root of 13873239 is about 240.2846102707.

The spelling of 13873239 in words is "thirteen million, eight hundred seventy-three thousand, two hundred thirty-nine".