383868 has 18 divisors (see below), whose sum is σ = 970424. Its totient is φ = 127944.

The previous prime is 383839. The next prime is 383869. The reversal of 383868 is 868383.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 10663 = 383868 / (3 + 8 + 3 + 8 + 6 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383869) by changing a digit.

383868 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 5 ways as a sum of consecutive naturals, for example, 5296 + ... + 5367.

2³⁸³⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

383868 is an abundant number, since it is smaller than the sum of its proper divisors (586556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

383868 is a wasteful number, since it uses less digits than its factorization.

383868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10673 (or 10668 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 383868 is about 619.5708191966. The cubic root of 383868 is about 72.6764942894.

The spelling of 383868 in words is "three hundred eighty-three thousand, eight hundred sixty-eight".