40044805 has 4 divisors (see below), whose sum is σ = 48053772. Its totient is φ = 32035840.

The previous prime is 40044803. The next prime is 40044811. The reversal of 40044805 is 50844004.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5022081 + 35022724 = 2241^2 + 5918^2 .

It is not a de Polignac number, because 40044805 - 2¹ = 40044803 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40044805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40044803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4004476 + ... + 4004485.

It is an arithmetic number, because the mean of its divisors is an integer number (12013443).

Almost surely, 2^40044805 is an apocalyptic number.

It is an amenable number.

40044805 is a deficient number, since it is larger than the sum of its proper divisors (8008967).

40044805 is an equidigital number, since it uses as much as digits as its factorization.

40044805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8008966.

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 40044805 is about 6328.0964752444. The cubic root of 40044805 is about 342.1228341416.

Adding to 40044805 its reverse (50844004), we get a palindrome (90888809).

The spelling of 40044805 in words is "forty million, forty-four thousand, eight hundred five".