12793489 has 4 divisors (see below), whose sum is σ = 13091056. Its totient is φ = 12495924.

The previous prime is 12793477. The next prime is 12793499. The reversal of 12793489 is 98439721.

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: 98439721 = 37 ⋅2660533.

It is a cyclic number.

It is not a de Polignac number, because 12793489 - 2⁵ = 12793457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 297523 = 12793489 / (1 + 2 + 7 + 9 + 3 + 4 + 8 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12793409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148719 + ... + 148804.

It is an arithmetic number, because the mean of its divisors is an integer number (3272764).

Almost surely, 2^12793489 is an apocalyptic number.

It is an amenable number.

12793489 is a deficient number, since it is larger than the sum of its proper divisors (297567).

12793489 is an equidigital number, since it uses as much as digits as its factorization.

12793489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297566.

The product of its digits is 108864, while the sum is 43.

The square root of 12793489 is about 3576.7987083424. The cubic root of 12793489 is about 233.8817492477.

The spelling of 12793489 in words is "twelve million, seven hundred ninety-three thousand, four hundred eighty-nine".