40189761 has 12 divisors (see below), whose sum is σ = 58191588. Its totient is φ = 26728704.

The previous prime is 40189759. The next prime is 40189777. The reversal of 40189761 is 16798104.

40189761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9884736 + 30305025 = 3144^2 + 5505^2 .

It is not a de Polignac number, because 40189761 - 2¹ = 40189759 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40189711) 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 11 ways as a sum of consecutive naturals, for example, 1260 + ... + 9053.

It is an arithmetic number, because the mean of its divisors is an integer number (4849299).

Almost surely, 2^40189761 is an apocalyptic number.

It is an amenable number.

40189761 is a deficient number, since it is larger than the sum of its proper divisors (18001827).

40189761 is a wasteful number, since it uses less digits than its factorization.

40189761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10752 (or 10749 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 40189761 is about 6339.5394943166. The cubic root of 40189761 is about 342.5351476175.

The spelling of 40189761 in words is "forty million, one hundred eighty-nine thousand, seven hundred sixty-one".