40310939 has 2 divisors, whose sum is σ = 40310940. Its totient is φ = 40310938.

The previous prime is 40310891. The next prime is 40310953. The reversal of 40310939 is 93901304.

40310939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40310939 - 2¹² = 40306843 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40310539) 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 as a sum of consecutive naturals, namely, 20155469 + 20155470.

It is an arithmetic number, because the mean of its divisors is an integer number (20155470).

Almost surely, 2^40310939 is an apocalyptic number.

40310939 is a deficient number, since it is larger than the sum of its proper divisors (1).

40310939 is an equidigital number, since it uses as much as digits as its factorization.

40310939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 40310939 is about 6349.0896197801. The cubic root of 40310939 is about 342.8790666950.

The spelling of 40310939 in words is "forty million, three hundred ten thousand, nine hundred thirty-nine".