389913 has 4 divisors (see below), whose sum is σ = 519888. Its totient is φ = 259940.

The previous prime is 389911. The next prime is 389923. The reversal of 389913 is 319983.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 319983 = 3 ⋅106661.

It is a cyclic number.

It is not a de Polignac number, because 389913 - 2¹ = 389911 is a prime.

It is a D-number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (389911) 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, 64983 + ... + 64988.

It is an arithmetic number, because the mean of its divisors is an integer number (129972).

2³⁸⁹⁹¹³ is an apocalyptic number.

It is an amenable number.

389913 is a deficient number, since it is larger than the sum of its proper divisors (129975).

389913 is a wasteful number, since it uses less digits than its factorization.

389913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129974.

The product of its digits is 5832, while the sum is 33.

The square root of 389913 is about 624.4301402079. The cubic root of 389913 is about 73.0560025632.

The spelling of 389913 in words is "three hundred eighty-nine thousand, nine hundred thirteen".