40040788 has 12 divisors (see below), whose sum is σ = 70118272. Its totient is φ = 20007000.

The previous prime is 40040773. The next prime is 40040789. The reversal of 40040788 is 88704004.

40040788 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40040789) 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 3 ways as a sum of consecutive naturals, for example, 6781 + ... + 11227.

Almost surely, 2^40040788 is an apocalyptic number.

It is an amenable number.

40040788 is a deficient number, since it is larger than the sum of its proper divisors (30077484).

40040788 is a wasteful number, since it uses less digits than its factorization.

40040788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6702 (or 6700 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 40040788 is about 6327.7790732610. The cubic root of 40040788 is about 342.1113940112. Note that the first 3 decimals are identical.

The spelling of 40040788 in words is "forty million, forty thousand, seven hundred eighty-eight".