12964809 has 32 divisors (see below), whose sum is σ = 20772864. Its totient is φ = 7087680.

The previous prime is 12964781. The next prime is 12964811. The reversal of 12964809 is 90846921.

It is not a de Polignac number, because 12964809 - 2⁷ = 12964681 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (12964309) 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 31 ways as a sum of consecutive naturals, for example, 19842 + ... + 20484.

It is an arithmetic number, because the mean of its divisors is an integer number (649152).

Almost surely, 2^12964809 is an apocalyptic number.

It is an amenable number.

12964809 is a deficient number, since it is larger than the sum of its proper divisors (7808055).

12964809 is a wasteful number, since it uses less digits than its factorization.

12964809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 12964809 is about 3600.6678547181. The cubic root of 12964809 is about 234.9211082700.

It can be divided in two parts, 1296 and 4809, that added together give a triangular number (6105 = T₁₁₀).

The spelling of 12964809 in words is "twelve million, nine hundred sixty-four thousand, eight hundred nine".