40045305 has 8 divisors (see below), whose sum is σ = 64072512. Its totient is φ = 21357488.

The previous prime is 40045303. The next prime is 40045309. The reversal of 40045305 is 50354004.

It is a happy number.

40045305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40045305 - 2¹ = 40045303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40045301) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1334829 + ... + 1334858.

It is an arithmetic number, because the mean of its divisors is an integer number (8009064).

Almost surely, 2^40045305 is an apocalyptic number.

It is an amenable number.

40045305 is a deficient number, since it is larger than the sum of its proper divisors (24027207).

40045305 is a wasteful number, since it uses less digits than its factorization.

40045305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2669695.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 40045305 is about 6328.1359814720. The cubic root of 40045305 is about 342.1242580526.

Adding to 40045305 its reverse (50354004), we get a palindrome (90399309).

The spelling of 40045305 in words is "forty million, forty-five thousand, three hundred five".