12445729 has 8 divisors (see below), whose sum is σ = 12640320. Its totient is φ = 12252816.

The previous prime is 12445723. The next prime is 12445753. The reversal of 12445729 is 92754421.

12445729 = 122² + 123² + ... + 339².

12445729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12445729 - 2¹¹ = 12443681 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12445694 and 12445703.

It is not an unprimeable number, because it can be changed into a prime (12445723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24492 + ... + 24994.

It is an arithmetic number, because the mean of its divisors is an integer number (1580040).

Almost surely, 2^12445729 is an apocalyptic number.

It is an amenable number.

12445729 is a deficient number, since it is larger than the sum of its proper divisors (194591).

12445729 is a wasteful number, since it uses less digits than its factorization.

12445729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839.

The product of its digits is 20160, while the sum is 34.

The square root of 12445729 is about 3527.8504786910. The cubic root of 12445729 is about 231.7430828657.

The spelling of 12445729 in words is "twelve million, four hundred forty-five thousand, seven hundred twenty-nine".