389778877983 has 16 divisors (see below), whose sum is σ = 585239841792. Its totient is φ = 228609312000.

The previous prime is 389778877933. The next prime is 389778878057.

It is a happy number.

389778877983 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 389778877983 - 2¹⁰ = 389778876959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 389778877896 and 389778877905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389778877933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190506738 + ... + 190508783.

It is an arithmetic number, because the mean of its divisors is an integer number (36577490112).

Almost surely, 2^389778877983 is an apocalyptic number.

389778877983 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

389778877983 is a deficient number, since it is larger than the sum of its proper divisors (195460963809).

389778877983 is a wasteful number, since it uses less digits than its factorization.

389778877983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381015566.

The product of its digits is 7169347584, while the sum is 84.

The spelling of 389778877983 in words is "three hundred eighty-nine billion, seven hundred seventy-eight million, eight hundred seventy-seven thousand, nine hundred eighty-three".