39047221429 has 2 divisors, whose sum is σ = 39047221430. Its totient is φ = 39047221428.

The previous prime is 39047221333. The next prime is 39047221439. The reversal of 39047221429 is 92412274093.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32327320804 + 6719900625 = 179798^2 + 81975^2 .

It is a cyclic number.

It is not a de Polignac number, because 39047221429 - 2³³ = 30457286837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39047221439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19523610714 + 19523610715.

It is an arithmetic number, because the mean of its divisors is an integer number (19523610715).

Almost surely, 2^39047221429 is an apocalyptic number.

It is an amenable number.

39047221429 is a deficient number, since it is larger than the sum of its proper divisors (1).

39047221429 is an equidigital number, since it uses as much as digits as its factorization.

39047221429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 39047221429 in words is "thirty-nine billion, forty-seven million, two hundred twenty-one thousand, four hundred twenty-nine".