39430178340029 has 2 divisors, whose sum is σ = 39430178340030. Its totient is φ = 39430178340028.

The previous prime is 39430178339999. The next prime is 39430178340041. The reversal of 39430178340029 is 92004387103493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39149673580900 + 280504759129 = 6256970^2 + 529627^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39430178340029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39430175340029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19715089170014 + 19715089170015.

It is an arithmetic number, because the mean of its divisors is an integer number (19715089170015).

Almost surely, 2^{39430178340029} is an apocalyptic number.

It is an amenable number.

39430178340029 is a deficient number, since it is larger than the sum of its proper divisors (1).

39430178340029 is an equidigital number, since it uses as much as digits as its factorization.

39430178340029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3919104, while the sum is 53.

The spelling of 39430178340029 in words is "thirty-nine trillion, four hundred thirty billion, one hundred seventy-eight million, three hundred forty thousand, twenty-nine".