4258609 has 2 divisors, whose sum is σ = 4258610. Its totient is φ = 4258608.

The previous prime is 4258607. The next prime is 4258643. The reversal of 4258609 is 9068524.

It is a happy number.

It is an a-pointer prime, because the next prime (4258643) can be obtained adding 4258609 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2640625 + 1617984 = 1625^2 + 1272^2 .

It is a cyclic number.

It is not a de Polignac number, because 4258609 - 2¹ = 4258607 is a prime.

It is a super-2 number, since 2×4258609² = 36271501229762, which contains 22 as substring.

Together with 4258607, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4258607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2129304 + 2129305.

It is an arithmetic number, because the mean of its divisors is an integer number (2129305).

Almost surely, 2^4258609 is an apocalyptic number.

It is an amenable number.

4258609 is a deficient number, since it is larger than the sum of its proper divisors (1).

4258609 is an equidigital number, since it uses as much as digits as its factorization.

4258609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 4258609 is about 2063.6397456921. The cubic root of 4258609 is about 162.0898881326.

The spelling of 4258609 in words is "four million, two hundred fifty-eight thousand, six hundred nine".