4235609 has 6 divisors (see below), whose sum is σ = 4927194. Its totient is φ = 3630480.

The previous prime is 4235603. The next prime is 4235633. The reversal of 4235609 is 9065324.

It can be written as a sum of positive squares in only one way, i.e., 3705625 + 529984 = 1925^2 + 728^2 .

It is not a de Polignac number, because 4235609 - 2²⁰ = 3187033 is a prime.

It is a d-powerful number, because it can be written as 4¹¹ + 2¹⁵ + 3³ + 5 + 6⁵ + 0 + 9³ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4235603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43172 + ... + 43269.

It is an arithmetic number, because the mean of its divisors is an integer number (821199).

Almost surely, 2^4235609 is an apocalyptic number.

4235609 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

4235609 is a deficient number, since it is larger than the sum of its proper divisors (691585).

4235609 is an equidigital number, since it uses as much as digits as its factorization.

4235609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86455 (or 86448 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 4235609 is about 2058.0595229487. The cubic root of 4235609 is about 161.7975548704.

The spelling of 4235609 in words is "four million, two hundred thirty-five thousand, six hundred nine".