389633 has 4 divisors (see below), whose sum is σ = 410160. Its totient is φ = 369108.

The previous prime is 389629. The next prime is 389651. The reversal of 389633 is 336983.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 389633 - 2² = 389629 is a prime.

It is a Duffinian number.

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 389633.

It is not an unprimeable number, because it can be changed into a prime (389663) 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, 10235 + ... + 10272.

It is an arithmetic number, because the mean of its divisors is an integer number (102540).

2³⁸⁹⁶³³ is an apocalyptic number.

It is an amenable number.

389633 is a deficient number, since it is larger than the sum of its proper divisors (20527).

389633 is a wasteful number, since it uses less digits than its factorization.

389633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20526.

The product of its digits is 11664, while the sum is 32.

The square root of 389633 is about 624.2058955185. The cubic root of 389633 is about 73.0385109867.

Subtracting from 389633 its reverse (336983), we obtain a triangular number (52650 = T₃₂₄).

The spelling of 389633 in words is "three hundred eighty-nine thousand, six hundred thirty-three".