13449239 has 4 divisors (see below), whose sum is σ = 13762056. Its totient is φ = 13136424.

The previous prime is 13449221. The next prime is 13449253. The reversal of 13449239 is 93294431.

13449239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93294431 = 277 ⋅336803.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13449239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13449199 and 13449208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13449209) 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, 156344 + ... + 156429.

It is an arithmetic number, because the mean of its divisors is an integer number (3440514).

Almost surely, 2^13449239 is an apocalyptic number.

13449239 is a deficient number, since it is larger than the sum of its proper divisors (312817).

13449239 is an equidigital number, since it uses as much as digits as its factorization.

13449239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312816.

The product of its digits is 23328, while the sum is 35.

The square root of 13449239 is about 3667.3204114176. The cubic root of 13449239 is about 237.8113456861.

The spelling of 13449239 in words is "thirteen million, four hundred forty-nine thousand, two hundred thirty-nine".