40439037127 has 2 divisors, whose sum is σ = 40439037128. Its totient is φ = 40439037126.

The previous prime is 40439037109. The next prime is 40439037167. The reversal of 40439037127 is 72173093404.

It is an a-pointer prime, because the next prime (40439037167) can be obtained adding 40439037127 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40439037127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40439037127.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40439037167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20219518563 + 20219518564.

It is an arithmetic number, because the mean of its divisors is an integer number (20219518564).

Almost surely, 2^40439037127 is an apocalyptic number.

40439037127 is a deficient number, since it is larger than the sum of its proper divisors (1).

40439037127 is an equidigital number, since it uses as much as digits as its factorization.

40439037127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 40.

The spelling of 40439037127 in words is "forty billion, four hundred thirty-nine million, thirty-seven thousand, one hundred twenty-seven".