12867951 has 4 divisors (see below), whose sum is σ = 17157272. Its totient is φ = 8578632.

The previous prime is 12867941. The next prime is 12867977. The reversal of 12867951 is 15976821.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12867951 - 2¹⁴ = 12851567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12867901) 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 3 ways as a sum of consecutive naturals, for example, 2144656 + ... + 2144661.

It is an arithmetic number, because the mean of its divisors is an integer number (4289318).

Almost surely, 2^12867951 is an apocalyptic number.

12867951 is a deficient number, since it is larger than the sum of its proper divisors (4289321).

12867951 is an equidigital number, since it uses as much as digits as its factorization.

12867951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4289320.

The product of its digits is 30240, while the sum is 39.

The square root of 12867951 is about 3587.1926349166. The cubic root of 12867951 is about 234.3346260766.

The spelling of 12867951 in words is "twelve million, eight hundred sixty-seven thousand, nine hundred fifty-one".