4079609 has 4 divisors (see below), whose sum is σ = 4319604. Its totient is φ = 3839616.

The previous prime is 4079573. The next prime is 4079617. The reversal of 4079609 is 9069704.

It is a happy number.

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 2706025 + 1373584 = 1645^2 + 1172^2 .

It is a cyclic number.

It is not a de Polignac number, because 4079609 - 2⁸ = 4079353 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 (4079629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119972 + ... + 120005.

It is an arithmetic number, because the mean of its divisors is an integer number (1079901).

Almost surely, 2^4079609 is an apocalyptic number.

It is an amenable number.

4079609 is a deficient number, since it is larger than the sum of its proper divisors (239995).

4079609 is a wasteful number, since it uses less digits than its factorization.

4079609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239994.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 4079609 is about 2019.8041984311. The cubic root of 4079609 is about 159.7862901987.

The spelling of 4079609 in words is "four million, seventy-nine thousand, six hundred nine".