12499489 has 4 divisors (see below), whose sum is σ = 12517056. Its totient is φ = 12481924.

The previous prime is 12499481. The next prime is 12499519. The reversal of 12499489 is 98499421.

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 12499489 - 2³ = 12499481 is a prime.

It is a super-2 number, since 2×12499489² = 312474450522242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12499481) by changing a digit.

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, 7669 + ... + 9154.

It is an arithmetic number, because the mean of its divisors is an integer number (3129264).

Almost surely, 2^12499489 is an apocalyptic number.

It is an amenable number.

12499489 is a deficient number, since it is larger than the sum of its proper divisors (17567).

12499489 is an equidigital number, since it uses as much as digits as its factorization.

12499489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17566.

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

The square root of 12499489 is about 3535.4616388811. The cubic root of 12499489 is about 232.0762791684.

The spelling of 12499489 in words is "twelve million, four hundred ninety-nine thousand, four hundred eighty-nine".