389808983 has 4 divisors (see below), whose sum is σ = 389851968. Its totient is φ = 389766000.

The previous prime is 389808967. The next prime is 389809009.

389808983 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 389808983 - 2⁴ = 389808967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389808943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1991 + ... + 27992.

It is an arithmetic number, because the mean of its divisors is an integer number (97462992).

Almost surely, 2^389808983 is an apocalyptic number.

389808983 is a deficient number, since it is larger than the sum of its proper divisors (42985).

389808983 is a wasteful number, since it uses less digits than its factorization.

389808983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42984.

The product of its (nonzero) digits is 2985984, while the sum is 56.

The square root of 389808983 is about 19743.5808049097. The cubic root of 389808983 is about 730.4950560783.

The spelling of 389808983 in words is "three hundred eighty-nine million, eight hundred eight thousand, nine hundred eighty-three".