382639 has 4 divisors (see below), whose sum is σ = 384480. Its totient is φ = 380800.

The previous prime is 382631. The next prime is 382643. The reversal of 382639 is 936283.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 382639 - 2³ = 382631 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 382639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (382631) 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 3 ways as a sum of consecutive naturals, for example, 562 + ... + 1039.

It is an arithmetic number, because the mean of its divisors is an integer number (96120).

2³⁸²⁶³⁹ is an apocalyptic number.

382639 is a deficient number, since it is larger than the sum of its proper divisors (1841).

382639 is a wasteful number, since it uses less digits than its factorization.

382639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1840.

The product of its digits is 7776, while the sum is 31.

The square root of 382639 is about 618.5782084749. The cubic root of 382639 is about 72.5988504955.

The spelling of 382639 in words is "three hundred eighty-two thousand, six hundred thirty-nine".