389787983 has 16 divisors (see below), whose sum is σ = 442807680. Its totient is φ = 340140384.

The previous prime is 389787973. The next prime is 389788013.

389787983 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 389787983 - 2¹⁶ = 389722447 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 (389787913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137660 + ... + 140462.

It is an arithmetic number, because the mean of its divisors is an integer number (27675480).

Almost surely, 2^389787983 is an apocalyptic number.

389787983 is a deficient number, since it is larger than the sum of its proper divisors (53019697).

389787983 is a wasteful number, since it uses less digits than its factorization.

389787983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3398.

The product of its digits is 18289152, while the sum is 62.

The square root of 389787983 is about 19743.0489793243. The cubic root of 389787983 is about 730.4819379680.

The spelling of 389787983 in words is "three hundred eighty-nine million, seven hundred eighty-seven thousand, nine hundred eighty-three".