389949 has 16 divisors (see below), whose sum is σ = 614400. Its totient is φ = 215280.

The previous prime is 389947. The next prime is 389953. The reversal of 389949 is 949983.

It is not a de Polignac number, because 389949 - 2¹ = 389947 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 389949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352 + ... + 950.

It is an arithmetic number, because the mean of its divisors is an integer number (38400).

2³⁸⁹⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

389949 is a deficient number, since it is larger than the sum of its proper divisors (224451).

389949 is a wasteful number, since it uses less digits than its factorization.

389949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640.

The product of its digits is 69984, while the sum is 42.

The square root of 389949 is about 624.4589658256. The cubic root of 389949 is about 73.0582508725.

The spelling of 389949 in words is "three hundred eighty-nine thousand, nine hundred forty-nine".