4003345 has 4 divisors (see below), whose sum is σ = 4804020. Its totient is φ = 3202672.

The previous prime is 4003333. The next prime is 4003361. The reversal of 4003345 is 5433004.

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 795664 + 3207681 = 892^2 + 1791^2 .

It is a cyclic number.

It is not a de Polignac number, because 4003345 - 2⁹ = 4002833 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400330 + ... + 400339.

It is an arithmetic number, because the mean of its divisors is an integer number (1201005).

Almost surely, 2^4003345 is an apocalyptic number.

It is an amenable number.

4003345 is a deficient number, since it is larger than the sum of its proper divisors (800675).

4003345 is an equidigital number, since it uses as much as digits as its factorization.

4003345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800674.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 4003345 is about 2000.8360752445. The cubic root of 4003345 is about 158.7843416725.

Adding to 4003345 its reverse (5433004), we get a palindrome (9436349).

The spelling of 4003345 in words is "four million, three thousand, three hundred forty-five".