12489005 has 4 divisors (see below), whose sum is σ = 14986812. Its totient is φ = 9991200.

The previous prime is 12488941. The next prime is 12489047. The reversal of 12489005 is 50098421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50098421 = 19 ⋅2636759.

It can be written as a sum of positive squares in 2 ways, for example, as 5697769 + 6791236 = 2387^2 + 2606^2 .

It is not a de Polignac number, because 12489005 - 2⁶ = 12488941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 1248896 + ... + 1248905.

It is an arithmetic number, because the mean of its divisors is an integer number (3746703).

Almost surely, 2^12489005 is an apocalyptic number.

It is an amenable number.

12489005 is a deficient number, since it is larger than the sum of its proper divisors (2497807).

12489005 is an equidigital number, since it uses as much as digits as its factorization.

12489005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2497806.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 12489005 is about 3533.9786360418. The cubic root of 12489005 is about 232.0113760276.

The spelling of 12489005 in words is "twelve million, four hundred eighty-nine thousand, five".