40494445 has 4 divisors (see below), whose sum is σ = 48593340. Its totient is φ = 32395552.

The previous prime is 40494431. The next prime is 40494449. The reversal of 40494445 is 54449404.

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 20620681 + 19873764 = 4541^2 + 4458^2 .

It is a cyclic number.

It is not a de Polignac number, because 40494445 - 2⁹ = 40493933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40494445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40494449) 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, 4049440 + ... + 4049449.

It is an arithmetic number, because the mean of its divisors is an integer number (12148335).

Almost surely, 2^40494445 is an apocalyptic number.

It is an amenable number.

40494445 is a deficient number, since it is larger than the sum of its proper divisors (8098895).

40494445 is an equidigital number, since it uses as much as digits as its factorization.

40494445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8098894.

The product of its (nonzero) digits is 46080, while the sum is 34.

The square root of 40494445 is about 6363.5245736934. The cubic root of 40494445 is about 343.3985710910.

It can be divided in two parts, 404 and 94445, that added together give a palindrome (94849).

The spelling of 40494445 in words is "forty million, four hundred ninety-four thousand, four hundred forty-five".