40288841 has 2 divisors, whose sum is σ = 40288842. Its totient is φ = 40288840.

The previous prime is 40288813. The next prime is 40288883. The reversal of 40288841 is 14888204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38800441 + 1488400 = 6229^2 + 1220^2 .

It is a cyclic number.

It is not a de Polignac number, because 40288841 - 2⁶ = 40288777 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (40288441) by changing a digit.

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 as a sum of consecutive naturals, namely, 20144420 + 20144421.

It is an arithmetic number, because the mean of its divisors is an integer number (20144421).

Almost surely, 2^40288841 is an apocalyptic number.

It is an amenable number.

40288841 is a deficient number, since it is larger than the sum of its proper divisors (1).

40288841 is an equidigital number, since it uses as much as digits as its factorization.

40288841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16384, while the sum is 35.

The square root of 40288841 is about 6347.3491317242. The cubic root of 40288841 is about 342.8164011030.

The spelling of 40288841 in words is "forty million, two hundred eighty-eight thousand, eight hundred forty-one".