389930821409 has 16 divisors (see below), whose sum is σ = 411264602880. Its totient is φ = 368678718720.

The previous prime is 389930821393. The next prime is 389930821421. The reversal of 389930821409 is 904128039983.

It is a cyclic number.

It is not a de Polignac number, because 389930821409 - 2⁴ = 389930821393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389930821439) 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 in 15 ways as a sum of consecutive naturals, for example, 30646169 + ... + 30658889.

It is an arithmetic number, because the mean of its divisors is an integer number (25704037680).

Almost surely, 2^389930821409 is an apocalyptic number.

It is an amenable number.

389930821409 is a deficient number, since it is larger than the sum of its proper divisors (21333781471).

389930821409 is a wasteful number, since it uses less digits than its factorization.

389930821409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15800.

The product of its (nonzero) digits is 3359232, while the sum is 56.

The spelling of 389930821409 in words is "three hundred eighty-nine billion, nine hundred thirty million, eight hundred twenty-one thousand, four hundred nine".