12755993 has 4 divisors (see below), whose sum is σ = 13052688. Its totient is φ = 12459300.

The previous prime is 12755989. The next prime is 12756013. The reversal of 12755993 is 39955721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39955721 = 13 ⋅3073517.

It is a cyclic number.

It is not a de Polignac number, because 12755993 - 2² = 12755989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12755993.

It is not an unprimeable number, because it can be changed into a prime (12755903) 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, 148283 + ... + 148368.

It is an arithmetic number, because the mean of its divisors is an integer number (3263172).

Almost surely, 2^12755993 is an apocalyptic number.

It is an amenable number.

12755993 is a deficient number, since it is larger than the sum of its proper divisors (296695).

12755993 is an equidigital number, since it uses as much as digits as its factorization.

12755993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296694.

The product of its digits is 85050, while the sum is 41.

The square root of 12755993 is about 3571.5533035362. The cubic root of 12755993 is about 233.6530336465.

The spelling of 12755993 in words is "twelve million, seven hundred fifty-five thousand, nine hundred ninety-three".