389722655522 has 18 divisors (see below), whose sum is σ = 592799713713. Its totient is φ = 192160211472.

The previous prime is 389722655507. The next prime is 389722655557. The reversal of 389722655522 is 225556227983.

It can be written as a sum of positive squares in 2 ways, for example, as 387930911281 + 1791744241 = 622841^2 + 42329^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=441431.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 64445903 + ... + 64451949.

Almost surely, 2^389722655522 is an apocalyptic number.

389722655522 is a deficient number, since it is larger than the sum of its proper divisors (203077058191).

389722655522 is an frugal number, since it uses more digits than its factorization.

389722655522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12242 (or 6122 counting only the distinct ones).

The product of its digits is 18144000, while the sum is 56.

The spelling of 389722655522 in words is "three hundred eighty-nine billion, seven hundred twenty-two million, six hundred fifty-five thousand, five hundred twenty-two".