380439391 has 2 divisors, whose sum is σ = 380439392. Its totient is φ = 380439390.

The previous prime is 380439373. The next prime is 380439401. The reversal of 380439391 is 193934083.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 380439391 - 2⁵ = 380439359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (380439331) 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, 190219695 + 190219696.

It is an arithmetic number, because the mean of its divisors is an integer number (190219696).

Almost surely, 2^380439391 is an apocalyptic number.

380439391 is a deficient number, since it is larger than the sum of its proper divisors (1).

380439391 is an equidigital number, since it uses as much as digits as its factorization.

380439391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 380439391 is about 19504.8555749588. The cubic root of 380439391 is about 724.5947102983.

The spelling of 380439391 in words is "three hundred eighty million, four hundred thirty-nine thousand, three hundred ninety-one".