12624989 has 4 divisors (see below), whose sum is σ = 13596156. Its totient is φ = 11653824.

The previous prime is 12624979. The next prime is 12624991. The reversal of 12624989 is 98942621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3833764 + 8791225 = 1958^2 + 2965^2 .

It is not a de Polignac number, because 12624989 - 2¹⁶ = 12559453 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12624979) 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, 485564 + ... + 485589.

It is an arithmetic number, because the mean of its divisors is an integer number (3399039).

Almost surely, 2^12624989 is an apocalyptic number.

It is an amenable number.

12624989 is a deficient number, since it is larger than the sum of its proper divisors (971167).

12624989 is an equidigital number, since it uses as much as digits as its factorization.

12624989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971166.

The product of its digits is 62208, while the sum is 41.

The square root of 12624989 is about 3553.1660529730. The cubic root of 12624989 is about 232.8504077636.

The spelling of 12624989 in words is "twelve million, six hundred twenty-four thousand, nine hundred eighty-nine".