12439271 has 8 divisors (see below), whose sum is σ = 13585824. Its totient is φ = 11319840.

The previous prime is 12439253. The next prime is 12439279. The reversal of 12439271 is 17293421.

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 12439271 - 2¹⁰ = 12438247 is a prime.

It is a super-2 number, since 2×12439271² = 309470926022882, 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 (12439279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5816 + ... + 7661.

It is an arithmetic number, because the mean of its divisors is an integer number (1698228).

Almost surely, 2^12439271 is an apocalyptic number.

12439271 is a deficient number, since it is larger than the sum of its proper divisors (1146553).

12439271 is a wasteful number, since it uses less digits than its factorization.

12439271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13561.

The product of its digits is 3024, while the sum is 29.

The square root of 12439271 is about 3526.9350717018. The cubic root of 12439271 is about 231.7029926532.

The spelling of 12439271 in words is "twelve million, four hundred thirty-nine thousand, two hundred seventy-one".