380565947 has 2 divisors, whose sum is σ = 380565948. Its totient is φ = 380565946.

The previous prime is 380565929. The next prime is 380565967. The reversal of 380565947 is 749565083.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 380565947 - 2⁶ = 380565883 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (380565967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190282973 + 190282974.

It is an arithmetic number, because the mean of its divisors is an integer number (190282974).

Almost surely, 2^380565947 is an apocalyptic number.

380565947 is a deficient number, since it is larger than the sum of its proper divisors (1).

380565947 is an equidigital number, since it uses as much as digits as its factorization.

380565947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 907200, while the sum is 47.

The square root of 380565947 is about 19508.0995230186. The cubic root of 380565947 is about 724.6750486682.

The spelling of 380565947 in words is "three hundred eighty million, five hundred sixty-five thousand, nine hundred forty-seven".