7409609 has 4 divisors (see below), whose sum is σ = 7531140. Its totient is φ = 7288080.

The previous prime is 7409599. The next prime is 7409617. The reversal of 7409609 is 9069047.

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 2569609 + 4840000 = 1603^2 + 2200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7409609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7409629) 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, 60674 + ... + 60795.

It is an arithmetic number, because the mean of its divisors is an integer number (1882785).

Almost surely, 2^7409609 is an apocalyptic number.

It is an amenable number.

7409609 is a deficient number, since it is larger than the sum of its proper divisors (121531).

7409609 is a wasteful number, since it uses less digits than its factorization.

7409609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121530.

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

The square root of 7409609 is about 2722.0596980963. The cubic root of 7409609 is about 194.9538264552.

The spelling of 7409609 in words is "seven million, four hundred nine thousand, six hundred nine".