40890788 has 12 divisors (see below), whose sum is σ = 71727180. Its totient is φ = 20397312.

The previous prime is 40890779. The next prime is 40890823. The reversal of 40890788 is 88709804.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5345344 + 35545444 = 2312^2 + 5962^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10073 + ... + 13536.

It is an arithmetic number, because the mean of its divisors is an integer number (5977265).

Almost surely, 2^40890788 is an apocalyptic number.

It is an amenable number.

40890788 is a deficient number, since it is larger than the sum of its proper divisors (30836392).

40890788 is a wasteful number, since it uses less digits than its factorization.

40890788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24046 (or 24044 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 40890788 is about 6394.5905263746. The cubic root of 40890788 is about 344.5152837381.

The spelling of 40890788 in words is "forty million, eight hundred ninety thousand, seven hundred eighty-eight".