12653309 has 16 divisors (see below), whose sum is σ = 13675200. Its totient is φ = 11684736.

The previous prime is 12653299. The next prime is 12653323. The reversal of 12653309 is 90335621.

12653309 is digitally balanced in base 2, 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 12653309 - 2¹² = 12649213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12653009) 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, 90962 + ... + 91100.

It is an arithmetic number, because the mean of its divisors is an integer number (854700).

Almost surely, 2^12653309 is an apocalyptic number.

It is an amenable number.

12653309 is a deficient number, since it is larger than the sum of its proper divisors (1021891).

12653309 is a wasteful number, since it uses less digits than its factorization.

12653309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284.

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

The square root of 12653309 is about 3557.1489988473. The cubic root of 12653309 is about 233.0243854453.

It can be divided in two parts, 126 and 53309, that added together give a palindrome (53435).

The spelling of 12653309 in words is "twelve million, six hundred fifty-three thousand, three hundred nine".