383883921 has 32 divisors (see below), whose sum is σ = 583795200. Its totient is φ = 249194880.

The previous prime is 383883901. The next prime is 383883959. The reversal of 383883921 is 129388383.

It is not a de Polignac number, because 383883921 - 2⁵ = 383883889 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (383883901) 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, 289941 + ... + 291261.

It is an arithmetic number, because the mean of its divisors is an integer number (18243600).

Almost surely, 2^383883921 is an apocalyptic number.

It is an amenable number.

383883921 is a deficient number, since it is larger than the sum of its proper divisors (199911279).

383883921 is a wasteful number, since it uses less digits than its factorization.

383883921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1606 (or 1600 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 383883921 is about 19592.9559025687. The cubic root of 383883921 is about 726.7749903277.

The spelling of 383883921 in words is "three hundred eighty-three million, eight hundred eighty-three thousand, nine hundred twenty-one".