382823921 has 8 divisors (see below), whose sum is σ = 385218504. Its totient is φ = 380436480.

The previous prime is 382823897. The next prime is 382823927. The reversal of 382823921 is 129328283.

It can be written as a sum of positive squares in 4 ways, for example, as 314530225 + 68293696 = 17735^2 + 8264^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 382823921 - 2¹⁰ = 382822897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (382823927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137681 + ... + 140433.

It is an arithmetic number, because the mean of its divisors is an integer number (48152313).

Almost surely, 2^382823921 is an apocalyptic number.

It is an amenable number.

382823921 is a deficient number, since it is larger than the sum of its proper divisors (2394583).

382823921 is a wasteful number, since it uses less digits than its factorization.

382823921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3571.

The product of its digits is 41472, while the sum is 38.

The square root of 382823921 is about 19565.8866653162. The cubic root of 382823921 is about 726.1054375371.

The spelling of 382823921 in words is "three hundred eighty-two million, eight hundred twenty-three thousand, nine hundred twenty-one".