40044605 has 16 divisors (see below), whose sum is σ = 51164784. Its totient is φ = 29982720.

The previous prime is 40044593. The next prime is 40044617. The reversal of 40044605 is 50644004.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40044593) and next prime (40044617).

It can be written as a sum of positive squares in 8 ways, for example, as 3345241 + 36699364 = 1829^2 + 6058^2 .

It is not a de Polignac number, because 40044605 - 2⁸ = 40044349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15185 + ... + 17625.

It is an arithmetic number, because the mean of its divisors is an integer number (3197799).

Almost surely, 2^40044605 is an apocalyptic number.

It is an amenable number.

40044605 is a deficient number, since it is larger than the sum of its proper divisors (11120179).

40044605 is a wasteful number, since it uses less digits than its factorization.

40044605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2656.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 40044605 is about 6328.0806726843. The cubic root of 40044605 is about 342.1222645739.

Adding to 40044605 its reverse (50644004), we get a palindrome (90688609).

The spelling of 40044605 in words is "forty million, forty-four thousand, six hundred five".