383828257 has 2 divisors, whose sum is σ = 383828258. Its totient is φ = 383828256.

The previous prime is 383828251. The next prime is 383828293. The reversal of 383828257 is 752828383.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 377952481 + 5875776 = 19441^2 + 2424^2 .

It is a cyclic number.

It is not a de Polignac number, because 383828257 - 2¹⁹ = 383303969 is a prime.

It is not a weakly prime, because it can be changed into another prime (383828251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191914128 + 191914129.

It is an arithmetic number, because the mean of its divisors is an integer number (191914129).

Almost surely, 2^383828257 is an apocalyptic number.

It is an amenable number.

383828257 is a deficient number, since it is larger than the sum of its proper divisors (1).

383828257 is an equidigital number, since it uses as much as digits as its factorization.

383828257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 645120, while the sum is 46.

The square root of 383828257 is about 19591.5353405495. The cubic root of 383828257 is about 726.7398606471.

The spelling of 383828257 in words is "three hundred eighty-three million, eight hundred twenty-eight thousand, two hundred fifty-seven".