380843977 has 2 divisors, whose sum is σ = 380843978. Its totient is φ = 380843976.

The previous prime is 380843963. The next prime is 380843987. The reversal of 380843977 is 779348083.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 375933321 + 4910656 = 19389^2 + 2216^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-380843977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 380843977.

It is not a weakly prime, because it can be changed into another prime (380843927) 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, 190421988 + 190421989.

It is an arithmetic number, because the mean of its divisors is an integer number (190421989).

Almost surely, 2^380843977 is an apocalyptic number.

It is an amenable number.

380843977 is a deficient number, since it is larger than the sum of its proper divisors (1).

380843977 is an equidigital number, since it uses as much as digits as its factorization.

380843977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The square root of 380843977 is about 19515.2242364775. The cubic root of 380843977 is about 724.8514809527.

The spelling of 380843977 in words is "three hundred eighty million, eight hundred forty-three thousand, nine hundred seventy-seven".