12604489 has 2 divisors, whose sum is σ = 12604490. Its totient is φ = 12604488.

The previous prime is 12604477. The next prime is 12604511. The reversal of 12604489 is 98440621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11614464 + 990025 = 3408^2 + 995^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12604489 is a prime.

It is a super-2 number, since 2×12604489² = 317746285902242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12604409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6302244 + 6302245.

It is an arithmetic number, because the mean of its divisors is an integer number (6302245).

Almost surely, 2^12604489 is an apocalyptic number.

It is an amenable number.

12604489 is a deficient number, since it is larger than the sum of its proper divisors (1).

12604489 is an equidigital number, since it uses as much as digits as its factorization.

12604489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 12604489 is about 3550.2801297926. The cubic root of 12604489 is about 232.7243081334.

The spelling of 12604489 in words is "twelve million, six hundred four thousand, four hundred eighty-nine".