382789909 has 2 divisors, whose sum is σ = 382789910. Its totient is φ = 382789908.

The previous prime is 382789907. The next prime is 382789963. The reversal of 382789909 is 909987283.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 380133009 + 2656900 = 19497^2 + 1630^2 .

It is a cyclic number.

It is not a de Polignac number, because 382789909 - 2¹ = 382789907 is a prime.

It is a super-2 number, since 2×382789909² = 293056228864456562, which contains 22 as substring.

Together with 382789907, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 382789909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (382789907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191394954 + 191394955.

It is an arithmetic number, because the mean of its divisors is an integer number (191394955).

Almost surely, 2^382789909 is an apocalyptic number.

It is an amenable number.

382789909 is a deficient number, since it is larger than the sum of its proper divisors (1).

382789909 is an equidigital number, since it uses as much as digits as its factorization.

382789909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The square root of 382789909 is about 19565.0174801864. The cubic root of 382789909 is about 726.0839332821.

The spelling of 382789909 in words is "three hundred eighty-two million, seven hundred eighty-nine thousand, nine hundred nine".