12751489 has 4 divisors (see below), whose sum is σ = 13422640. Its totient is φ = 12080340.

The previous prime is 12751481. The next prime is 12751517. The reversal of 12751489 is 98415721.

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: 98415721 = 173 ⋅568877.

It is a cyclic number.

It is not a de Polignac number, because 12751489 - 2³ = 12751481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12751481) 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, 335547 + ... + 335584.

It is an arithmetic number, because the mean of its divisors is an integer number (3355660).

Almost surely, 2^12751489 is an apocalyptic number.

12751489 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12751489 is a deficient number, since it is larger than the sum of its proper divisors (671151).

12751489 is an equidigital number, since it uses as much as digits as its factorization.

12751489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671150.

The product of its digits is 20160, while the sum is 37.

The square root of 12751489 is about 3570.9227098889. The cubic root of 12751489 is about 233.6255303088.

The spelling of 12751489 in words is "twelve million, seven hundred fifty-one thousand, four hundred eighty-nine".