13439217 has 8 divisors (see below), whose sum is σ = 19548000. Its totient is φ = 8144960.

The previous prime is 13439201. The next prime is 13439219. The reversal of 13439217 is 71293431.

13439217 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13439217 - 2⁴ = 13439201 is a prime.

It is a super-2 number, since 2×13439217² = 361225107146178, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13439219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203592 + ... + 203657.

It is an arithmetic number, because the mean of its divisors is an integer number (2443500).

Almost surely, 2^13439217 is an apocalyptic number.

It is an amenable number.

13439217 is a deficient number, since it is larger than the sum of its proper divisors (6108783).

13439217 is a wasteful number, since it uses less digits than its factorization.

13439217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407263.

The product of its digits is 4536, while the sum is 30.

The square root of 13439217 is about 3665.9537640292. The cubic root of 13439217 is about 237.7522608672.

The spelling of 13439217 in words is "thirteen million, four hundred thirty-nine thousand, two hundred seventeen".