40435445 has 4 divisors (see below), whose sum is σ = 48522540. Its totient is φ = 32348352.

The previous prime is 40435441. The next prime is 40435453. The reversal of 40435445 is 54453404.

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 27804529 + 12630916 = 5273^2 + 3554^2 .

It is a cyclic number.

It is not a de Polignac number, because 40435445 - 2² = 40435441 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 (40435441) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4043540 + ... + 4043549.

It is an arithmetic number, because the mean of its divisors is an integer number (12130635).

Almost surely, 2^40435445 is an apocalyptic number.

It is an amenable number.

40435445 is a deficient number, since it is larger than the sum of its proper divisors (8087095).

40435445 is an equidigital number, since it uses as much as digits as its factorization.

40435445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8087094.

The product of its (nonzero) digits is 19200, while the sum is 29.

The square root of 40435445 is about 6358.8870881625. The cubic root of 40435445 is about 343.2317139377.

Adding to 40435445 its reverse (54453404), we get a palindrome (94888849).

The spelling of 40435445 in words is "forty million, four hundred thirty-five thousand, four hundred forty-five".