12489403 has 8 divisors (see below), whose sum is σ = 13344320. Its totient is φ = 11654280.

The previous prime is 12489371. The next prime is 12489427. The reversal of 12489403 is 30498421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12489403 - 2⁵ = 12489371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12489443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3633 + ... + 6178.

It is an arithmetic number, because the mean of its divisors is an integer number (1668040).

Almost surely, 2^12489403 is an apocalyptic number.

12489403 is a deficient number, since it is larger than the sum of its proper divisors (854917).

12489403 is an equidigital number, since it uses as much as digits as its factorization.

12489403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9897.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 12489403 is about 3534.0349460638. The cubic root of 12489403 is about 232.0138405833.

The spelling of 12489403 in words is "twelve million, four hundred eighty-nine thousand, four hundred three".