383988 has 24 divisors (see below), whose sum is σ = 977760. Its totient is φ = 116320.

The previous prime is 383987. The next prime is 384001. The reversal of 383988 is 889383.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383983) 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 7 ways as a sum of consecutive naturals, for example, 1323 + ... + 1586.

It is an arithmetic number, because the mean of its divisors is an integer number (40740).

2³⁸³⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

383988 is an abundant number, since it is smaller than the sum of its proper divisors (593772).

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

383988 is a wasteful number, since it uses less digits than its factorization.

383988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2927 (or 2925 counting only the distinct ones).

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

The square root of 383988 is about 619.6676528592. The cubic root of 383988 is about 72.6840665718.

The spelling of 383988 in words is "three hundred eighty-three thousand, nine hundred eighty-eight".