40004442239 has 2 divisors, whose sum is σ = 40004442240. Its totient is φ = 40004442238.

The previous prime is 40004442197. The next prime is 40004442251. The reversal of 40004442239 is 93224440004.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40004442239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40004142239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20002221119 + 20002221120.

It is an arithmetic number, because the mean of its divisors is an integer number (20002221120).

Almost surely, 2^40004442239 is an apocalyptic number.

40004442239 is a deficient number, since it is larger than the sum of its proper divisors (1).

40004442239 is an equidigital number, since it uses as much as digits as its factorization.

40004442239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 32.

The spelling of 40004442239 in words is "forty billion, four million, four hundred forty-two thousand, two hundred thirty-nine".