12390867 has 8 divisors (see below), whose sum is σ = 18356880. Its totient is φ = 8260560.

The previous prime is 12390863. The next prime is 12390871. The reversal of 12390867 is 76809321.

It is an interprime number because it is at equal distance from previous prime (12390863) and next prime (12390871).

It is not a de Polignac number, because 12390867 - 2² = 12390863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12390863) 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 7 ways as a sum of consecutive naturals, for example, 229434 + ... + 229487.

It is an arithmetic number, because the mean of its divisors is an integer number (2294610).

Almost surely, 2^12390867 is an apocalyptic number.

12390867 is a deficient number, since it is larger than the sum of its proper divisors (5966013).

12390867 is an equidigital number, since it uses as much as digits as its factorization.

12390867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458930 (or 458924 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 12390867 is about 3520.0663346022. The cubic root of 12390867 is about 231.4020658455.

The spelling of 12390867 in words is "twelve million, three hundred ninety thousand, eight hundred sixty-seven".