40809064 has 32 divisors (see below), whose sum is σ = 79168320. Its totient is φ = 19708416.

The previous prime is 40809059. The next prime is 40809073. The reversal of 40809064 is 46090804.

40809064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 32757 + ... + 33979.

It is an arithmetic number, because the mean of its divisors is an integer number (2474010).

Almost surely, 2^40809064 is an apocalyptic number.

It is an amenable number.

40809064 is a deficient number, since it is larger than the sum of its proper divisors (38359256).

40809064 is a wasteful number, since it uses less digits than its factorization.

40809064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1369 (or 1365 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 40809064 is about 6388.1972417890. The cubic root of 40809064 is about 344.2856155074.

Adding to 40809064 its reverse (46090804), we get a palindrome (86899868).

The spelling of 40809064 in words is "forty million, eight hundred nine thousand, sixty-four".