7438609 has 4 divisors (see below), whose sum is σ = 7444080. Its totient is φ = 7433140.

The previous prime is 7438597. The next prime is 7438619. The reversal of 7438609 is 9068347.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7438609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7438619) 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, 1062 + ... + 4000.

It is an arithmetic number, because the mean of its divisors is an integer number (1861020).

Almost surely, 2^7438609 is an apocalyptic number.

It is an amenable number.

7438609 is a deficient number, since it is larger than the sum of its proper divisors (5471).

7438609 is a wasteful number, since it uses less digits than its factorization.

7438609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5470.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 7438609 is about 2727.3813448068. The cubic root of 7438609 is about 195.2078345110.

It can be divided in two parts, 74 and 38609, that added together give a palindrome (38683).

The spelling of 7438609 in words is "seven million, four hundred thirty-eight thousand, six hundred nine".