12863409 has 16 divisors (see below), whose sum is σ = 18564672. Its totient is φ = 7875648.

The previous prime is 12863393. The next prime is 12863413. The reversal of 12863409 is 90436821.

It is not a de Polignac number, because 12863409 - 2⁴ = 12863393 is a prime.

It is a super-2 number, since 2×12863409² = 330934582202562, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12863409.

It is not an unprimeable number, because it can be changed into a prime (12863429) 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 15 ways as a sum of consecutive naturals, for example, 8127 + ... + 9579.

It is an arithmetic number, because the mean of its divisors is an integer number (1160292).

Almost surely, 2^12863409 is an apocalyptic number.

It is an amenable number.

12863409 is a deficient number, since it is larger than the sum of its proper divisors (5701263).

12863409 is a wasteful number, since it uses less digits than its factorization.

12863409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 12863409 is about 3586.5594934421. The cubic root of 12863409 is about 234.3070518051.

The spelling of 12863409 in words is "twelve million, eight hundred sixty-three thousand, four hundred nine".