4045405 has 32 divisors (see below), whose sum is σ = 6338304. Its totient is φ = 2405376.

The previous prime is 4045399. The next prime is 4045417. The reversal of 4045405 is 5045404.

It is a cyclic number.

It is not a de Polignac number, because 4045405 - 2⁷ = 4045277 is a prime.

It is a super-2 number, since 2×4045405² = 32730603228050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7474 + ... + 7996.

It is an arithmetic number, because the mean of its divisors is an integer number (198072).

Almost surely, 2^4045405 is an apocalyptic number.

It is an amenable number.

4045405 is a deficient number, since it is larger than the sum of its proper divisors (2292899).

4045405 is a wasteful number, since it uses less digits than its factorization.

4045405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 4045405 is about 2011.3192188213. The cubic root of 4045405 is about 159.3384796495.

Subtracting 4045405 from its reverse (5045404), we obtain a palindrome (999999).

The spelling of 4045405 in words is "four million, forty-five thousand, four hundred five".