383489920 has 256 divisors, whose sum is σ = 1092787200. Its totient is φ = 127180800.

The previous prime is 383489917. The next prime is 383489923. The reversal of 383489920 is 29984383.

It is an interprime number because it is at equal distance from previous prime (383489917) and next prime (383489923).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383489923) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6286690 + ... + 6286750.

It is an arithmetic number, because the mean of its divisors is an integer number (4268700).

Almost surely, 2^383489920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 383489920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (546393600).

383489920 is an abundant number, since it is smaller than the sum of its proper divisors (709297280).

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

383489920 is a wasteful number, since it uses less digits than its factorization.

383489920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 383489920 is about 19582.8986618427. The cubic root of 383489920 is about 726.5262622802.

The spelling of 383489920 in words is "three hundred eighty-three million, four hundred eighty-nine thousand, nine hundred twenty".