40244661 has 16 divisors (see below), whose sum is σ = 63129600. Its totient is φ = 25251264.

The previous prime is 40244639. The next prime is 40244669. The reversal of 40244661 is 16644204.

40244661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40244661 - 2⁵ = 40244629 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40244669) 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 15 ways as a sum of consecutive naturals, for example, 43381 + ... + 44298.

It is an arithmetic number, because the mean of its divisors is an integer number (3945600).

Almost surely, 2^40244661 is an apocalyptic number.

It is an amenable number.

40244661 is a deficient number, since it is larger than the sum of its proper divisors (22884939).

40244661 is a wasteful number, since it uses less digits than its factorization.

40244661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87705 (or 87699 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 40244661 is about 6343.8679841245. The cubic root of 40244661 is about 342.6910465570.

Adding to 40244661 its reverse (16644204), we get a palindrome (56888865).

The spelling of 40244661 in words is "forty million, two hundred forty-four thousand, six hundred sixty-one".