382798721 has 2 divisors, whose sum is σ = 382798722. Its totient is φ = 382798720.

The previous prime is 382798693. The next prime is 382798751. The reversal of 382798721 is 127897283.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 280060225 + 102738496 = 16735^2 + 10136^2 .

It is an emirp because it is prime and its reverse (127897283) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 382798721 - 2¹⁸ = 382536577 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (382798751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191399360 + 191399361.

It is an arithmetic number, because the mean of its divisors is an integer number (191399361).

Almost surely, 2^382798721 is an apocalyptic number.

It is an amenable number.

382798721 is a deficient number, since it is larger than the sum of its proper divisors (1).

382798721 is an equidigital number, since it uses as much as digits as its factorization.

382798721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 47.

The square root of 382798721 is about 19565.2426767469. The cubic root of 382798721 is about 726.0895048349.

The spelling of 382798721 in words is "three hundred eighty-two million, seven hundred ninety-eight thousand, seven hundred twenty-one".