40051866 has 8 divisors (see below), whose sum is σ = 80103744. Its totient is φ = 13350620.

The previous prime is 40051841. The next prime is 40051883. The reversal of 40051866 is 66815004.

It is a sphenic number, since it is the product of 3 distinct primes.

40051866 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 3337650 + ... + 3337661.

It is an arithmetic number, because the mean of its divisors is an integer number (10012968).

Almost surely, 2^40051866 is an apocalyptic number.

40051866 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40051866 is a wasteful number, since it uses less digits than its factorization.

40051866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6675316.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 40051866 is about 6328.6543593405. The cubic root of 40051866 is about 342.1429415135.

The spelling of 40051866 in words is "forty million, fifty-one thousand, eight hundred sixty-six".