12504391 has 2 divisors, whose sum is σ = 12504392. Its totient is φ = 12504390.

The previous prime is 12504379. The next prime is 12504431. The reversal of 12504391 is 19340521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12504391 - 2⁷ = 12504263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12504311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6252195 + 6252196.

It is an arithmetic number, because the mean of its divisors is an integer number (6252196).

Almost surely, 2^12504391 is an apocalyptic number.

12504391 is a deficient number, since it is larger than the sum of its proper divisors (1).

12504391 is an equidigital number, since it uses as much as digits as its factorization.

12504391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 12504391 is about 3536.1548325830. The cubic root of 12504391 is about 232.1066134547.

The spelling of 12504391 in words is "twelve million, five hundred four thousand, three hundred ninety-one".