12850409 has 16 divisors (see below), whose sum is σ = 15316224. Its totient is φ = 10627200.

The previous prime is 12850391. The next prime is 12850417. The reversal of 12850409 is 90405821.

12850409 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12850409 - 2⁸ = 12850153 is a prime.

It is a super-2 number, since 2×12850409² = 330266022934562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12850429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9824 + ... + 11054.

It is an arithmetic number, because the mean of its divisors is an integer number (957264).

Almost surely, 2^12850409 is an apocalyptic number.

It is an amenable number.

12850409 is a deficient number, since it is larger than the sum of its proper divisors (2465815).

12850409 is a wasteful number, since it uses less digits than its factorization.

12850409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 12850409 is about 3584.7467135071. The cubic root of 12850409 is about 234.2280935144.

The spelling of 12850409 in words is "twelve million, eight hundred fifty thousand, four hundred nine".