382143449 has 2 divisors, whose sum is σ = 382143450. Its totient is φ = 382143448.

The previous prime is 382143407. The next prime is 382143473. The reversal of 382143449 is 944341283.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 372490000 + 9653449 = 19300^2 + 3107^2 .

It is an emirp because it is prime and its reverse (944341283) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-382143449 is a prime.

It is a super-2 number, since 2×382143449² = 292067231227231202, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (382143049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191071724 + 191071725.

It is an arithmetic number, because the mean of its divisors is an integer number (191071725).

Almost surely, 2^382143449 is an apocalyptic number.

It is an amenable number.

382143449 is a deficient number, since it is larger than the sum of its proper divisors (1).

382143449 is an equidigital number, since it uses as much as digits as its factorization.

382143449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 38.

The square root of 382143449 is about 19548.4896859067. The cubic root of 382143449 is about 725.6749633394.

The spelling of 382143449 in words is "three hundred eighty-two million, one hundred forty-three thousand, four hundred forty-nine".