12563309 has 8 divisors (see below), whose sum is σ = 13820160. Its totient is φ = 11419980.

The previous prime is 12563273. The next prime is 12563321. The reversal of 12563309 is 90336521.

It is not a de Polignac number, because 12563309 - 2¹² = 12559213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12563209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3389 + ... + 6050.

It is an arithmetic number, because the mean of its divisors is an integer number (1727520).

Almost surely, 2^12563309 is an apocalyptic number.

It is an amenable number.

12563309 is a deficient number, since it is larger than the sum of its proper divisors (1256851).

12563309 is an frugal number, since it uses more digits than its factorization.

12563309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9472 (or 9450 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 12563309 is about 3544.4758427728. The cubic root of 12563309 is about 232.4705878700.

The spelling of 12563309 in words is "twelve million, five hundred sixty-three thousand, three hundred nine".