40319239 has 2 divisors, whose sum is σ = 40319240. Its totient is φ = 40319238.

The previous prime is 40319203. The next prime is 40319249. The reversal of 40319239 is 93291304.

40319239 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 40319239 - 2¹¹ = 40317191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40319239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40319249) 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, 20159619 + 20159620.

It is an arithmetic number, because the mean of its divisors is an integer number (20159620).

Almost surely, 2^40319239 is an apocalyptic number.

40319239 is a deficient number, since it is larger than the sum of its proper divisors (1).

40319239 is an equidigital number, since it uses as much as digits as its factorization.

40319239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 40319239 is about 6349.7432231548. The cubic root of 40319239 is about 342.9025979499.

The spelling of 40319239 in words is "forty million, three hundred nineteen thousand, two hundred thirty-nine".