389899 has 4 divisors (see below), whose sum is σ = 410440. Its totient is φ = 369360.

The previous prime is 389897. The next prime is 389903. The reversal of 389899 is 998983.

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

It is not a de Polignac number, because 389899 - 2¹ = 389897 is a prime.

It is a Duffinian number.

389899 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (389891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10242 + ... + 10279.

It is an arithmetic number, because the mean of its divisors is an integer number (102610).

2³⁸⁹⁸⁹⁹ is an apocalyptic number.

389899 is a deficient number, since it is larger than the sum of its proper divisors (20541).

389899 is a wasteful number, since it uses less digits than its factorization.

389899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20540.

The product of its digits is 139968, while the sum is 46.

The square root of 389899 is about 624.4189298860. The cubic root of 389899 is about 73.0551281833.

The spelling of 389899 in words is "three hundred eighty-nine thousand, eight hundred ninety-nine".