12874509 has 12 divisors (see below), whose sum is σ = 18632796. Its totient is φ = 8566272.

The previous prime is 12874493. The next prime is 12874513. The reversal of 12874509 is 90547821.

It can be written as a sum of positive squares in 2 ways, for example, as 6140484 + 6734025 = 2478^2 + 2595^2 .

It is not a de Polignac number, because 12874509 - 2⁴ = 12874493 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12874529) 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 11 ways as a sum of consecutive naturals, for example, 5037 + ... + 7149.

It is an arithmetic number, because the mean of its divisors is an integer number (1552733).

Almost surely, 2^12874509 is an apocalyptic number.

It is an amenable number.

12874509 is a deficient number, since it is larger than the sum of its proper divisors (5758287).

12874509 is a wasteful number, since it uses less digits than its factorization.

12874509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2796 (or 2793 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 12874509 is about 3588.1066037675. The cubic root of 12874509 is about 234.3744279453.

The spelling of 12874509 in words is "twelve million, eight hundred seventy-four thousand, five hundred nine".