389881032829 has 2 divisors, whose sum is σ = 389881032830. Its totient is φ = 389881032828.

The previous prime is 389881032799. The next prime is 389881032833. The reversal of 389881032829 is 928230188983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 228075970329 + 161805062500 = 477573^2 + 402250^2 .

It is a cyclic number.

It is not a de Polignac number, because 389881032829 - 2⁵ = 389881032797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389881032899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194940516414 + 194940516415.

It is an arithmetic number, because the mean of its divisors is an integer number (194940516415).

Almost surely, 2^389881032829 is an apocalyptic number.

It is an amenable number.

389881032829 is a deficient number, since it is larger than the sum of its proper divisors (1).

389881032829 is an equidigital number, since it uses as much as digits as its factorization.

389881032829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11943936, while the sum is 61.

The spelling of 389881032829 in words is "three hundred eighty-nine billion, eight hundred eighty-one million, thirty-two thousand, eight hundred twenty-nine".