29384989817 has 2 divisors, whose sum is σ = 29384989818. Its totient is φ = 29384989816.

The previous prime is 29384989721. The next prime is 29384989873. The reversal of 29384989817 is 71898948392.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24580281961 + 4804707856 = 156781^2 + 69316^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29384989817 is a prime.

It is not a weakly prime, because it can be changed into another prime (29384986817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14692494908 + 14692494909.

It is an arithmetic number, because the mean of its divisors is an integer number (14692494909).

Almost surely, 2^29384989817 is an apocalyptic number.

It is an amenable number.

29384989817 is a deficient number, since it is larger than the sum of its proper divisors (1).

29384989817 is an equidigital number, since it uses as much as digits as its factorization.

29384989817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62705664, while the sum is 68.

The spelling of 29384989817 in words is "twenty-nine billion, three hundred eighty-four million, nine hundred eighty-nine thousand, eight hundred seventeen".