4355609 has 4 divisors (see below), whose sum is σ = 4360704. Its totient is φ = 4350516.

The previous prime is 4355581. The next prime is 4355623. The reversal of 4355609 is 9065534.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9065534 = 2 ⋅4532767.

It is a cyclic number.

It is not a de Polignac number, because 4355609 - 2²⁰ = 3307033 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4355639) 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, 917 + ... + 3090.

It is an arithmetic number, because the mean of its divisors is an integer number (1090176).

Almost surely, 2^4355609 is an apocalyptic number.

It is an amenable number.

4355609 is a deficient number, since it is larger than the sum of its proper divisors (5095).

4355609 is a wasteful number, since it uses less digits than its factorization.

4355609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5094.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 4355609 is about 2087.0095831117. The cubic root of 4355609 is about 163.3113224076.

The spelling of 4355609 in words is "four million, three hundred fifty-five thousand, six hundred nine".