12560399 has 4 divisors (see below), whose sum is σ = 13299264. Its totient is φ = 11821536.

The previous prime is 12560347. The next prime is 12560407. The reversal of 12560399 is 99306521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12560399 - 2⁸ = 12560143 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 (12560699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 369407 + ... + 369440.

It is an arithmetic number, because the mean of its divisors is an integer number (3324816).

Almost surely, 2^12560399 is an apocalyptic number.

12560399 is a deficient number, since it is larger than the sum of its proper divisors (738865).

12560399 is an equidigital number, since it uses as much as digits as its factorization.

12560399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738864.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 12560399 is about 3544.0653210684. The cubic root of 12560399 is about 232.4526376721.

The spelling of 12560399 in words is "twelve million, five hundred sixty thousand, three hundred ninety-nine".