12785899 has 4 divisors (see below), whose sum is σ = 14612464. Its totient is φ = 10959336.

The previous prime is 12785869. The next prime is 12785933. The reversal of 12785899 is 99858721.

12785899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99858721 = 1307 ⋅76403.

It is a cyclic number.

It is not a de Polignac number, because 12785899 - 2⁵ = 12785867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12785869) 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, 913272 + ... + 913285.

It is an arithmetic number, because the mean of its divisors is an integer number (3653116).

Almost surely, 2^12785899 is an apocalyptic number.

12785899 is a deficient number, since it is larger than the sum of its proper divisors (1826565).

12785899 is an equidigital number, since it uses as much as digits as its factorization.

12785899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1826564.

The product of its digits is 362880, while the sum is 49.

The square root of 12785899 is about 3575.7375462973. The cubic root of 12785899 is about 233.8354883816.

The spelling of 12785899 in words is "twelve million, seven hundred eighty-five thousand, eight hundred ninety-nine".