381339799 has 2 divisors, whose sum is σ = 381339800. Its totient is φ = 381339798.

The previous prime is 381339787. The next prime is 381339841. The reversal of 381339799 is 997933183.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 381339799 - 2¹¹ = 381337751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381339719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190669899 + 190669900.

It is an arithmetic number, because the mean of its divisors is an integer number (190669900).

Almost surely, 2^381339799 is an apocalyptic number.

381339799 is a deficient number, since it is larger than the sum of its proper divisors (1).

381339799 is an equidigital number, since it uses as much as digits as its factorization.

381339799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1102248, while the sum is 52.

The square root of 381339799 is about 19527.9235711327. The cubic root of 381339799 is about 725.1659067006.

The spelling of 381339799 in words is "three hundred eighty-one million, three hundred thirty-nine thousand, seven hundred ninety-nine".