389886121688983 has 4 divisors (see below), whose sum is σ = 410406443883160. Its totient is φ = 369365799494808.

The previous prime is 389886121688971. The next prime is 389886121688989.

389886121688983 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 389886121688983 - 2⁴¹ = 387687098433431 is a prime.

It is a super-2 number, since 2×389886121688983² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 389886121688894 and 389886121688903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389886121688989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10260161097060 + ... + 10260161097097.

It is an arithmetic number, because the mean of its divisors is an integer number (102601610970790).

Almost surely, 2^{389886121688983} is an apocalyptic number.

389886121688983 is a deficient number, since it is larger than the sum of its proper divisors (20520322194177).

389886121688983 is a wasteful number, since it uses less digits than its factorization.

389886121688983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20520322194176.

The product of its digits is 13759414272, while the sum is 88.

The spelling of 389886121688983 in words is "three hundred eighty-nine trillion, eight hundred eighty-six billion, one hundred twenty-one million, six hundred eighty-eight thousand, nine hundred eighty-three".