4005329 has 4 divisors (see below), whose sum is σ = 4026276. Its totient is φ = 3984384.

The previous prime is 4005317. The next prime is 4005341. The reversal of 4005329 is 9235004.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (4005317) and next prime (4005341).

It can be written as a sum of positive squares in 2 ways, for example, as 1098304 + 2907025 = 1048^2 + 1705^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4005329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4005229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10184 + ... + 10569.

It is an arithmetic number, because the mean of its divisors is an integer number (1006569).

Almost surely, 2^4005329 is an apocalyptic number.

It is an amenable number.

4005329 is a deficient number, since it is larger than the sum of its proper divisors (20947).

4005329 is a wasteful number, since it uses less digits than its factorization.

4005329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20946.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 4005329 is about 2001.3318065728. The cubic root of 4005329 is about 158.8105677499.

It can be divided in two parts, 4005 and 329, that added together give a palindrome (4334).

The spelling of 4005329 in words is "four million, five thousand, three hundred twenty-nine".