380405747 has 2 divisors, whose sum is σ = 380405748. Its totient is φ = 380405746.

The previous prime is 380405741. The next prime is 380405759. The reversal of 380405747 is 747504083.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 380405747 - 2¹⁴ = 380389363 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 380405747.

It is not a weakly prime, because it can be changed into another prime (380405741) 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, 190202873 + 190202874.

It is an arithmetic number, because the mean of its divisors is an integer number (190202874).

Almost surely, 2^380405747 is an apocalyptic number.

380405747 is a deficient number, since it is larger than the sum of its proper divisors (1).

380405747 is an equidigital number, since it uses as much as digits as its factorization.

380405747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 380405747 is about 19503.9931039775. The cubic root of 380405747 is about 724.5733499242.

The spelling of 380405747 in words is "three hundred eighty million, four hundred five thousand, seven hundred forty-seven".