383843988 has 48 divisors (see below), whose sum is σ = 1085622720. Its totient is φ = 116316000.

The previous prime is 383843983. The next prime is 383844047. The reversal of 383843988 is 889348383.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383843981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160363 + ... + 162738.

It is an arithmetic number, because the mean of its divisors is an integer number (22617140).

Almost surely, 2^383843988 is an apocalyptic number.

It is an amenable number.

383843988 is an abundant number, since it is smaller than the sum of its proper divisors (701778732).

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

383843988 is a wasteful number, since it uses less digits than its factorization.

383843988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323125 (or 323117 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The square root of 383843988 is about 19591.9368108413. The cubic root of 383843988 is about 726.7497888623.

The spelling of 383843988 in words is "three hundred eighty-three million, eight hundred forty-three thousand, nine hundred eighty-eight".