12739867 has 8 divisors (see below), whose sum is σ = 14870016. Its totient is φ = 10687272.

The previous prime is 12739847. The next prime is 12739871. The reversal of 12739867 is 76893721.

It is a happy number.

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 12739867 - 2¹⁵ = 12707099 is a prime.

It is a super-2 number, since 2×12739867² = 324608422355378, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12739847) 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, 19033 + ... + 19690.

It is an arithmetic number, because the mean of its divisors is an integer number (1858752).

Almost surely, 2^12739867 is an apocalyptic number.

12739867 is a deficient number, since it is larger than the sum of its proper divisors (2130149).

12739867 is an equidigital number, since it uses as much as digits as its factorization.

12739867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38777.

The product of its digits is 127008, while the sum is 43.

The square root of 12739867 is about 3569.2950284335. The cubic root of 12739867 is about 233.5545315094.

The spelling of 12739867 in words is "twelve million, seven hundred thirty-nine thousand, eight hundred sixty-seven".