389823643441 has 2 divisors, whose sum is σ = 389823643442. Its totient is φ = 389823643440.

The previous prime is 389823643373. The next prime is 389823643499. The reversal of 389823643441 is 144346328983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231749811216 + 158073832225 = 481404^2 + 397585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389823643441 is a prime.

It is not a weakly prime, because it can be changed into another prime (389823643141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194911821720 + 194911821721.

It is an arithmetic number, because the mean of its divisors is an integer number (194911821721).

Almost surely, 2^389823643441 is an apocalyptic number.

It is an amenable number.

389823643441 is a deficient number, since it is larger than the sum of its proper divisors (1).

389823643441 is an equidigital number, since it uses as much as digits as its factorization.

389823643441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11943936, while the sum is 55.

The spelling of 389823643441 in words is "three hundred eighty-nine billion, eight hundred twenty-three million, six hundred forty-three thousand, four hundred forty-one".