7423609 has 2 divisors, whose sum is σ = 7423610. Its totient is φ = 7423608.

The previous prime is 7423607. The next prime is 7423621. The reversal of 7423609 is 9063247.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4717584 + 2706025 = 2172^2 + 1645^2 .

It is a cyclic number.

It is not a de Polignac number, because 7423609 - 2¹ = 7423607 is a prime.

Together with 7423607, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (7423607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3711804 + 3711805.

It is an arithmetic number, because the mean of its divisors is an integer number (3711805).

Almost surely, 2^7423609 is an apocalyptic number.

It is an amenable number.

7423609 is a deficient number, since it is larger than the sum of its proper divisors (1).

7423609 is an equidigital number, since it uses as much as digits as its factorization.

7423609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 7423609 is about 2724.6300666329. The cubic root of 7423609 is about 195.0765336224.

The spelling of 7423609 in words is "seven million, four hundred twenty-three thousand, six hundred nine".