40823805 has 32 divisors (see below), whose sum is σ = 71549568. Its totient is φ = 19712000.

The previous prime is 40823801. The next prime is 40823831. The reversal of 40823805 is 50832804.

It is not a de Polignac number, because 40823805 - 2² = 40823801 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40823801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65857 + ... + 66473.

It is an arithmetic number, because the mean of its divisors is an integer number (2235924).

Almost surely, 2^40823805 is an apocalyptic number.

It is an amenable number.

40823805 is a deficient number, since it is larger than the sum of its proper divisors (30725763).

40823805 is a wasteful number, since it uses less digits than its factorization.

40823805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 40823805 is about 6389.3509059998. The cubic root of 40823805 is about 344.3270646595.

It can be divided in two parts, 4082 and 3805, that added together give a palindrome (7887).

The spelling of 40823805 in words is "forty million, eight hundred twenty-three thousand, eight hundred five".