12909546 has 48 divisors (see below), whose sum is σ = 30846816. Its totient is φ = 3876768.

The previous prime is 12909527. The next prime is 12909551. The reversal of 12909546 is 64590921.

It is a super-2 number, since 2×12909546² = 333312755852232, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12909546.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9421 + ... + 10703.

It is an arithmetic number, because the mean of its divisors is an integer number (642642).

Almost surely, 2^12909546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12909546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15423408).

12909546 is an abundant number, since it is smaller than the sum of its proper divisors (17937270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12909546 is a wasteful number, since it uses less digits than its factorization.

12909546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347 (or 1344 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 12909546 is about 3592.9856665453. The cubic root of 12909546 is about 234.5868461129.

The spelling of 12909546 in words is "twelve million, nine hundred nine thousand, five hundred forty-six".