381044407 has 2 divisors, whose sum is σ = 381044408. Its totient is φ = 381044406.

The previous prime is 381044317. The next prime is 381044431. The reversal of 381044407 is 704440183.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 381044407 - 2²³ = 372655799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381044497) 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, 190522203 + 190522204.

It is an arithmetic number, because the mean of its divisors is an integer number (190522204).

Almost surely, 2^381044407 is an apocalyptic number.

381044407 is a deficient number, since it is larger than the sum of its proper divisors (1).

381044407 is an equidigital number, since it uses as much as digits as its factorization.

381044407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 381044407 is about 19520.3587825634. The cubic root of 381044407 is about 724.9786165711.

The spelling of 381044407 in words is "three hundred eighty-one million, forty-four thousand, four hundred seven".