383391 has 12 divisors (see below), whose sum is σ = 567840. Its totient is φ = 249120.

The previous prime is 383371. The next prime is 383393. The reversal of 383391 is 193383.

It is not a de Polignac number, because 383391 - 2¹¹ = 381343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383393) 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 11 ways as a sum of consecutive naturals, for example, 151 + ... + 888.

It is an arithmetic number, because the mean of its divisors is an integer number (47320).

2³⁸³³⁹¹ is an apocalyptic number.

383391 is a deficient number, since it is larger than the sum of its proper divisors (184449).

383391 is a wasteful number, since it uses less digits than its factorization.

383391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086 (or 1083 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 383391 is about 619.1857556501. The cubic root of 383391 is about 72.6463788532.

The spelling of 383391 in words is "three hundred eighty-three thousand, three hundred ninety-one".