40020440004029 has 2 divisors, whose sum is σ = 40020440004030. Its totient is φ = 40020440004028.

The previous prime is 40020440003987. The next prime is 40020440004043. The reversal of 40020440004029 is 92040004402004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39481681068025 + 538758936004 = 6283445^2 + 734002^2 .

It is a cyclic number.

It is not a de Polignac number, because 40020440004029 - 2³⁶ = 39951720527293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40020440003992 and 40020440004010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40020440604029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20010220002014 + 20010220002015.

It is an arithmetic number, because the mean of its divisors is an integer number (20010220002015).

Almost surely, 2^{40020440004029} is an apocalyptic number.

It is an amenable number.

40020440004029 is a deficient number, since it is larger than the sum of its proper divisors (1).

40020440004029 is an equidigital number, since it uses as much as digits as its factorization.

40020440004029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 29.

The spelling of 40020440004029 in words is "forty trillion, twenty billion, four hundred forty million, four thousand, twenty-nine".