12621489 has 8 divisors (see below), whose sum is σ = 17220192. Its totient is φ = 8218560.

The previous prime is 12621487. The next prime is 12621493. The reversal of 12621489 is 98412621.

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

It is not a de Polignac number, because 12621489 - 2¹ = 12621487 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12621487) 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, 48792 + ... + 49049.

It is an arithmetic number, because the mean of its divisors is an integer number (2152524).

Almost surely, 2^12621489 is an apocalyptic number.

It is an amenable number.

12621489 is a deficient number, since it is larger than the sum of its proper divisors (4598703).

12621489 is an equidigital number, since it uses as much as digits as its factorization.

12621489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97887.

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

The square root of 12621489 is about 3552.6735003375. The cubic root of 12621489 is about 232.8288882267.

The spelling of 12621489 in words is "twelve million, six hundred twenty-one thousand, four hundred eighty-nine".