4045806 has 24 divisors (see below), whose sum is σ = 8888880. Its totient is φ = 1329696.

The previous prime is 4045787. The next prime is 4045817. The reversal of 4045806 is 6085404.

It is a self number, because there is not a number n which added to its sum of digits gives 4045806.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 226 + ... + 2853.

It is an arithmetic number, because the mean of its divisors is an integer number (370370).

Almost surely, 2^4045806 is an apocalyptic number.

4045806 is an abundant number, since it is smaller than the sum of its proper divisors (4843074).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4045806 is a wasteful number, since it uses less digits than its factorization.

4045806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3160 (or 3157 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 4045806 is about 2011.4189021683. The cubic root of 4045806 is about 159.3437442744.

It can be divided in two parts, 4045 and 806, that added together give a triangular number (4851 = T₉₈).

The spelling of 4045806 in words is "four million, forty-five thousand, eight hundred six".