12893989 has 4 divisors (see below), whose sum is σ = 13572640. Its totient is φ = 12215340.

The previous prime is 12893983. The next prime is 12894001. The reversal of 12893989 is 98939821.

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.

It is a cyclic number.

It is not a de Polignac number, because 12893989 - 2¹¹ = 12891941 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 (12893983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 339297 + ... + 339334.

It is an arithmetic number, because the mean of its divisors is an integer number (3393160).

Almost surely, 2^12893989 is an apocalyptic number.

12893989 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12893989 is a deficient number, since it is larger than the sum of its proper divisors (678651).

12893989 is an equidigital number, since it uses as much as digits as its factorization.

12893989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678650.

The product of its digits is 279936, while the sum is 49.

The square root of 12893989 is about 3590.8201013139. The cubic root of 12893989 is about 234.4925764794.

The spelling of 12893989 in words is "twelve million, eight hundred ninety-three thousand, nine hundred eighty-nine".