388839 has 8 divisors (see below), whose sum is σ = 565632. Its totient is φ = 235640.

The previous prime is 388837. The next prime is 388859. The reversal of 388839 is 938883.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 388839 - 2¹ = 388837 is a prime.

388839 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 388797 and 388806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5859 + ... + 5924.

It is an arithmetic number, because the mean of its divisors is an integer number (70704).

2³⁸⁸⁸³⁹ is an apocalyptic number.

388839 is a deficient number, since it is larger than the sum of its proper divisors (176793).

388839 is a wasteful number, since it uses less digits than its factorization.

388839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11797.

The product of its digits is 41472, while the sum is 39.

The square root of 388839 is about 623.5695630802. The cubic root of 388839 is about 72.9888642550.

The spelling of 388839 in words is "three hundred eighty-eight thousand, eight hundred thirty-nine".