12757889 has 4 divisors (see below), whose sum is σ = 12881856. Its totient is φ = 12633924.

The previous prime is 12757861. The next prime is 12757891. The reversal of 12757889 is 98875721.

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: 98875721 = 7 ⋅14125103.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12757889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12751889) 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, 61829 + ... + 62034.

It is an arithmetic number, because the mean of its divisors is an integer number (3220464).

Almost surely, 2^12757889 is an apocalyptic number.

It is an amenable number.

12757889 is a deficient number, since it is larger than the sum of its proper divisors (123967).

12757889 is a wasteful number, since it uses less digits than its factorization.

12757889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123966.

The product of its digits is 282240, while the sum is 47.

The square root of 12757889 is about 3571.8187244036. The cubic root of 12757889 is about 233.6646094918.

The spelling of 12757889 in words is "twelve million, seven hundred fifty-seven thousand, eight hundred eighty-nine".