40806544 has 15 divisors (see below), whose sum is σ = 79112217. Its totient is φ = 20390496.

The previous prime is 40806517. The next prime is 40806553. The reversal of 40806544 is 44560804.

The square root of 40806544 is 6388.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 8179600 + 32626944 = 2860^2 + 5712^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 24754 + ... + 26350.

Almost surely, 2^40806544 is an apocalyptic number.

40806544 is the 6388-th square number.

It is an amenable number.

40806544 is a deficient number, since it is larger than the sum of its proper divisors (38305673).

40806544 is an frugal number, since it uses more digits than its factorization.

40806544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3202 (or 1599 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The cubic root of 40806544 is about 344.2785287026.

The spelling of 40806544 in words is "forty million, eight hundred six thousand, five hundred forty-four".