12700989 has 64 divisors (see below), whose sum is σ = 23500800. Its totient is φ = 6614784.

The previous prime is 12700981. The next prime is 12700997. The reversal of 12700989 is 98900721.

It is a happy number.

12700989 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12700981) and next prime (12700997).

It is not a de Polignac number, because 12700989 - 2³ = 12700981 is a prime.

It is a super-2 number, since 2×12700989² = 322630243156242, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12700981) 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 63 ways as a sum of consecutive naturals, for example, 189534 + ... + 189600.

It is an arithmetic number, because the mean of its divisors is an integer number (367200).

Almost surely, 2^12700989 is an apocalyptic number.

It is an amenable number.

12700989 is a deficient number, since it is larger than the sum of its proper divisors (10799811).

12700989 is a wasteful number, since it uses less digits than its factorization.

12700989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 12700989 is about 3563.8446935858. The cubic root of 12700989 is about 233.3167115144.

It can be divided in two parts, 12700 and 989, that added together give a square (13689 = 117²).

The spelling of 12700989 in words is "twelve million, seven hundred thousand, nine hundred eighty-nine".