385773777 has 12 divisors (see below), whose sum is σ = 586556880. Its totient is φ = 243646488.

The previous prime is 385773763. The next prime is 385773811. The reversal of 385773777 is 777377583.

385773777 is a `hidden beast` number, since 38 + 577 + 37 + 7 + 7 = 666.

It is not a de Polignac number, because 385773777 - 2¹⁰ = 385772753 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (385773727) 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 in 11 ways as a sum of consecutive naturals, for example, 1127823 + ... + 1128164.

It is an arithmetic number, because the mean of its divisors is an integer number (48879740).

Almost surely, 2^385773777 is an apocalyptic number.

It is an amenable number.

385773777 is a deficient number, since it is larger than the sum of its proper divisors (200783103).

385773777 is a wasteful number, since it uses less digits than its factorization.

385773777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2256012 (or 2256009 counting only the distinct ones).

The product of its digits is 6050520, while the sum is 54.

The square root of 385773777 is about 19641.1246368430. The cubic root of 385773777 is about 727.9656734459.

The spelling of 385773777 in words is "three hundred eighty-five million, seven hundred seventy-three thousand, seven hundred seventy-seven".