4045309 has 8 divisors (see below), whose sum is σ = 4443840. Its totient is φ = 3665376.

The previous prime is 4045291. The next prime is 4045313. The reversal of 4045309 is 9035404.

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 4045309 - 2⁵ = 4045277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4045369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4192 + ... + 5065.

It is an arithmetic number, because the mean of its divisors is an integer number (555480).

Almost surely, 2^4045309 is an apocalyptic number.

It is an amenable number.

4045309 is a deficient number, since it is larger than the sum of its proper divisors (398531).

4045309 is a wasteful number, since it uses less digits than its factorization.

4045309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9299.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 4045309 is about 2011.2953537459. The cubic root of 4045309 is about 159.3372192388.

The spelling of 4045309 in words is "four million, forty-five thousand, three hundred nine".