381336899 has 2 divisors, whose sum is σ = 381336900. Its totient is φ = 381336898.

The previous prime is 381336869. The next prime is 381336947. The reversal of 381336899 is 998633183.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 381336899 - 2²⁰ = 380288323 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (381336869) 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, 190668449 + 190668450.

It is an arithmetic number, because the mean of its divisors is an integer number (190668450).

Almost surely, 2^381336899 is an apocalyptic number.

381336899 is a deficient number, since it is larger than the sum of its proper divisors (1).

381336899 is an equidigital number, since it uses as much as digits as its factorization.

381336899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 50.

The square root of 381336899 is about 19527.8493183453. The cubic root of 381336899 is about 725.1640684569.

The spelling of 381336899 in words is "three hundred eighty-one million, three hundred thirty-six thousand, eight hundred ninety-nine".