12309406 has 16 divisors (see below), whose sum is σ = 19047600. Its totient is φ = 5963328.

The previous prime is 12309391. The next prime is 12309413. The reversal of 12309406 is 60490321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7900 + ... + 9328.

It is an arithmetic number, because the mean of its divisors is an integer number (1190475).

Almost surely, 2^12309406 is an apocalyptic number.

12309406 is a deficient number, since it is larger than the sum of its proper divisors (6738194).

12309406 is a wasteful number, since it uses less digits than its factorization.

12309406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 12309406 is about 3508.4763074588. The cubic root of 12309406 is about 230.8938500190.

Adding to 12309406 its reverse (60490321), we get a palindrome (72799727).

The spelling of 12309406 in words is "twelve million, three hundred nine thousand, four hundred six".