382439917 has 2 divisors, whose sum is σ = 382439918. Its totient is φ = 382439916.

The previous prime is 382439903. The next prime is 382439951. The reversal of 382439917 is 719934283.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 379899081 + 2540836 = 19491^2 + 1594^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-382439917 is a prime.

It is a super-2 number, since 2×382439917² = 292520580229933778, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (382439957) 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 as a sum of consecutive naturals, namely, 191219958 + 191219959.

It is an arithmetic number, because the mean of its divisors is an integer number (191219959).

Almost surely, 2^382439917 is an apocalyptic number.

It is an amenable number.

382439917 is a deficient number, since it is larger than the sum of its proper divisors (1).

382439917 is an equidigital number, since it uses as much as digits as its factorization.

382439917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 46.

The square root of 382439917 is about 19556.0711033684. The cubic root of 382439917 is about 725.8625750807.

The spelling of 382439917 in words is "three hundred eighty-two million, four hundred thirty-nine thousand, nine hundred seventeen".