381007999 has 2 divisors, whose sum is σ = 381008000. Its totient is φ = 381007998.

The previous prime is 381007973. The next prime is 381008009. The reversal of 381007999 is 999700183.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 381007999 - 2⁵ = 381007967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381007699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190503999 + 190504000.

It is an arithmetic number, because the mean of its divisors is an integer number (190504000).

Almost surely, 2^381007999 is an apocalyptic number.

381007999 is a deficient number, since it is larger than the sum of its proper divisors (1).

381007999 is an equidigital number, since it uses as much as digits as its factorization.

381007999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 46.

The square root of 381007999 is about 19519.4261954597. The cubic root of 381007999 is about 724.9555257697.

The spelling of 381007999 in words is "three hundred eighty-one million, seven thousand, nine hundred ninety-nine".