12489783 has 8 divisors (see below), whose sum is σ = 17529600. Its totient is φ = 7888248.

The previous prime is 12489779. The next prime is 12489793. The reversal of 12489783 is 38798421.

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

It is not a de Polignac number, because 12489783 - 2² = 12489779 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12489703) 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, 109503 + ... + 109616.

It is an arithmetic number, because the mean of its divisors is an integer number (2191200).

Almost surely, 2^12489783 is an apocalyptic number.

12489783 is a deficient number, since it is larger than the sum of its proper divisors (5039817).

12489783 is a wasteful number, since it uses less digits than its factorization.

12489783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219141.

The product of its digits is 96768, while the sum is 42.

The square root of 12489783 is about 3534.0887085641. The cubic root of 12489783 is about 232.0161936279.

The spelling of 12489783 in words is "twelve million, four hundred eighty-nine thousand, seven hundred eighty-three".