40055530439 has 2 divisors, whose sum is σ = 40055530440. Its totient is φ = 40055530438.

The previous prime is 40055530381. The next prime is 40055530451. The reversal of 40055530439 is 93403555004.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40055530439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40055530639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20027765219 + 20027765220.

It is an arithmetic number, because the mean of its divisors is an integer number (20027765220).

Almost surely, 2^40055530439 is an apocalyptic number.

40055530439 is a deficient number, since it is larger than the sum of its proper divisors (1).

40055530439 is an equidigital number, since it uses as much as digits as its factorization.

40055530439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162000, while the sum is 38.

The spelling of 40055530439 in words is "forty billion, fifty-five million, five hundred thirty thousand, four hundred thirty-nine".