40445788 has 24 divisors (see below), whose sum is σ = 75902400. Its totient is φ = 18789888.

The previous prime is 40445777. The next prime is 40445791. The reversal of 40445788 is 88754404.

40445788 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×40445788⁴ (a number of 32 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40445788.

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 7 ways as a sum of consecutive naturals, for example, 1608 + ... + 9136.

It is an arithmetic number, because the mean of its divisors is an integer number (3162600).

Almost surely, 2^40445788 is an apocalyptic number.

It is an amenable number.

40445788 is a deficient number, since it is larger than the sum of its proper divisors (35456612).

40445788 is a wasteful number, since it uses less digits than its factorization.

40445788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7629 (or 7627 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 40.

The square root of 40445788 is about 6359.7003074044. The cubic root of 40445788 is about 343.2609765724.

The spelling of 40445788 in words is "forty million, four hundred forty-five thousand, seven hundred eighty-eight".