12489621 has 16 divisors (see below), whose sum is σ = 17940480. Its totient is φ = 7706160.

The previous prime is 12489619. The next prime is 12489629. The reversal of 12489621 is 12698421.

It is not a de Polignac number, because 12489621 - 2¹ = 12489619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12489629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 781 + ... + 5058.

It is an arithmetic number, because the mean of its divisors is an integer number (1121280).

Almost surely, 2^12489621 is an apocalyptic number.

It is an amenable number.

12489621 is a deficient number, since it is larger than the sum of its proper divisors (5450859).

12489621 is a wasteful number, since it uses less digits than its factorization.

12489621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5896.

The product of its digits is 6912, while the sum is 33.

The square root of 12489621 is about 3534.0657888613. The cubic root of 12489621 is about 232.0151904937.

The spelling of 12489621 in words is "twelve million, four hundred eighty-nine thousand, six hundred twenty-one".