12489949 has 4 divisors (see below), whose sum is σ = 12519360. Its totient is φ = 12460540.

The previous prime is 12489941. The next prime is 12489959. The reversal of 12489949 is 94998421.

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.

It is a cyclic number.

It is not a de Polignac number, because 12489949 - 2³ = 12489941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12489899 and 12489908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12489941) 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, 14059 + ... + 14920.

It is an arithmetic number, because the mean of its divisors is an integer number (3129840).

Almost surely, 2^12489949 is an apocalyptic number.

It is an amenable number.

12489949 is a deficient number, since it is larger than the sum of its proper divisors (29411).

12489949 is an equidigital number, since it uses as much as digits as its factorization.

12489949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29410.

The product of its digits is 186624, while the sum is 46.

The square root of 12489949 is about 3534.1121940312. The cubic root of 12489949 is about 232.0172215218.

The spelling of 12489949 in words is "twelve million, four hundred eighty-nine thousand, nine hundred forty-nine".