40366939 has 2 divisors, whose sum is σ = 40366940. Its totient is φ = 40366938.

The previous prime is 40366901. The next prime is 40366957. The reversal of 40366939 is 93966304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40366939 - 2¹⁹ = 39842651 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40366969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20183469 + 20183470.

It is an arithmetic number, because the mean of its divisors is an integer number (20183470).

Almost surely, 2^40366939 is an apocalyptic number.

40366939 is a deficient number, since it is larger than the sum of its proper divisors (1).

40366939 is an equidigital number, since it uses as much as digits as its factorization.

40366939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 40.

The square root of 40366939 is about 6353.4981702996. The cubic root of 40366939 is about 343.0377692177.

The spelling of 40366939 in words is "forty million, three hundred sixty-six thousand, nine hundred thirty-nine".