40981868 has 6 divisors (see below), whose sum is σ = 71718276. Its totient is φ = 20490932.

The previous prime is 40981819. The next prime is 40981877. The reversal of 40981868 is 86818904.

It is a happy number.

40981868 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 as a sum of consecutive naturals, namely, 5122730 + ... + 5122737.

It is an arithmetic number, because the mean of its divisors is an integer number (11953046).

Almost surely, 2^40981868 is an apocalyptic number.

It is an amenable number.

40981868 is a deficient number, since it is larger than the sum of its proper divisors (30736408).

40981868 is a wasteful number, since it uses less digits than its factorization.

40981868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10245471 (or 10245469 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 44.

The square root of 40981868 is about 6401.7082095328. The cubic root of 40981868 is about 344.7708847748.

The spelling of 40981868 in words is "forty million, nine hundred eighty-one thousand, eight hundred sixty-eight".