40440445 has 16 divisors (see below), whose sum is σ = 50911488. Its totient is φ = 30801600.

The previous prime is 40440419. The next prime is 40440451. The reversal of 40440445 is 54404404.

40440445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40440445 - 2⁷ = 40440317 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 (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6370 + ... + 11020.

It is an arithmetic number, because the mean of its divisors is an integer number (3181968).

Almost surely, 2^40440445 is an apocalyptic number.

It is an amenable number.

40440445 is a deficient number, since it is larger than the sum of its proper divisors (10471043).

40440445 is a wasteful number, since it uses less digits than its factorization.

40440445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4740.

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 40440445 is about 6359.2802265665. The cubic root of 40440445 is about 343.2458606666.

Adding to 40440445 its reverse (54404404), we get a palindrome (94844849).

The spelling of 40440445 in words is "forty million, four hundred forty thousand, four hundred forty-five".