12809401 has 16 divisors (see below), whose sum is σ = 14837760. Its totient is φ = 10936080.

The previous prime is 12809359. The next prime is 12809491. The reversal of 12809401 is 10490821.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12809401 - 2²¹ = 10712249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12809491) 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 15 ways as a sum of consecutive naturals, for example, 34720 + ... + 35086.

It is an arithmetic number, because the mean of its divisors is an integer number (927360).

Almost surely, 2^12809401 is an apocalyptic number.

12809401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12809401 is a deficient number, since it is larger than the sum of its proper divisors (2028359).

12809401 is a wasteful number, since it uses less digits than its factorization.

12809401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 12809401 is about 3579.0223525427. The cubic root of 12809401 is about 233.9786731482.

The spelling of 12809401 in words is "twelve million, eight hundred nine thousand, four hundred one".