40644305 has 16 divisors (see below), whose sum is σ = 53270784. Its totient is φ = 29588160.

The previous prime is 40644299. The next prime is 40644311. The reversal of 40644305 is 50344604.

40644305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40644299) and next prime (40644311).

It is not a de Polignac number, because 40644305 - 2¹⁴ = 40627921 is a prime.

It is a Duffinian 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, 212 + ... + 9018.

It is an arithmetic number, because the mean of its divisors is an integer number (3329424).

Almost surely, 2^40644305 is an apocalyptic number.

It is an amenable number.

40644305 is a deficient number, since it is larger than the sum of its proper divisors (12626479).

40644305 is a wasteful number, since it uses less digits than its factorization.

40644305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8896.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 40644305 is about 6375.2886209175. The cubic root of 40644305 is about 343.8216608726.

Adding to 40644305 its reverse (50344604), we get a palindrome (90988909).

The spelling of 40644305 in words is "forty million, six hundred forty-four thousand, three hundred five".