12994809 has 8 divisors (see below), whose sum is σ = 17620320. Its totient is φ = 8516256.

The previous prime is 12994777. The next prime is 12994811. The reversal of 12994809 is 90849921.

12994809 = 440² + 441² + ... + 498².

12994809 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12994809 - 2⁵ = 12994777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12998809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36532 + ... + 36885.

It is an arithmetic number, because the mean of its divisors is an integer number (2202540).

Almost surely, 2^12994809 is an apocalyptic number.

It is an amenable number.

12994809 is a deficient number, since it is larger than the sum of its proper divisors (4625511).

12994809 is an equidigital number, since it uses as much as digits as its factorization.

12994809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73479.

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 12994809 is about 3604.8313414084. The cubic root of 12994809 is about 235.1021677379.

The spelling of 12994809 in words is "twelve million, nine hundred ninety-four thousand, eight hundred nine".