385777747 has 2 divisors, whose sum is σ = 385777748. Its totient is φ = 385777746.

The previous prime is 385777741. The next prime is 385777783. The reversal of 385777747 is 747777583.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 385777747 - 2¹⁹ = 385253459 is a prime.

It is not a weakly prime, because it can be changed into another prime (385777741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192888873 + 192888874.

It is an arithmetic number, because the mean of its divisors is an integer number (192888874).

Almost surely, 2^385777747 is an apocalyptic number.

385777747 is a deficient number, since it is larger than the sum of its proper divisors (1).

385777747 is an equidigital number, since it uses as much as digits as its factorization.

385777747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8067360, while the sum is 55.

The square root of 385777747 is about 19641.2257000422. The cubic root of 385777747 is about 727.9681706035.

The spelling of 385777747 in words is "three hundred eighty-five million, seven hundred seventy-seven thousand, seven hundred forty-seven".