12746409 has 8 divisors (see below), whose sum is σ = 18302592. Its totient is φ = 7843920.

The previous prime is 12746407. The next prime is 12746453. The reversal of 12746409 is 90464721.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12746409 - 2¹ = 12746407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12746409.

It is not an unprimeable number, because it can be changed into a prime (12746401) 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 7 ways as a sum of consecutive naturals, for example, 163377 + ... + 163454.

It is an arithmetic number, because the mean of its divisors is an integer number (2287824).

Almost surely, 2^12746409 is an apocalyptic number.

It is an amenable number.

12746409 is a deficient number, since it is larger than the sum of its proper divisors (5556183).

12746409 is a wasteful number, since it uses less digits than its factorization.

12746409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326847.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 12746409 is about 3570.2113382824. The cubic root of 12746409 is about 233.5945018976.

The spelling of 12746409 in words is "twelve million, seven hundred forty-six thousand, four hundred nine".