7439645 has 8 divisors (see below), whose sum is σ = 9135456. Its totient is φ = 5813136.

The previous prime is 7439639. The next prime is 7439647. The reversal of 7439645 is 5469347.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7439645 - 2¹⁰ = 7438621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7439599 and 7439608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7439647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17087 + ... + 17516.

It is an arithmetic number, because the mean of its divisors is an integer number (1141932).

Almost surely, 2^7439645 is an apocalyptic number.

It is an amenable number.

7439645 is a deficient number, since it is larger than the sum of its proper divisors (1695811).

7439645 is a wasteful number, since it uses less digits than its factorization.

7439645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34651.

The product of its digits is 90720, while the sum is 38.

The square root of 7439645 is about 2727.5712639636. The cubic root of 7439645 is about 195.2168965067.

The spelling of 7439645 in words is "seven million, four hundred thirty-nine thousand, six hundred forty-five".