385430777 has 4 divisors (see below), whose sum is σ = 385841316. Its totient is φ = 385020240.

The previous prime is 385430767. The next prime is 385430779. The reversal of 385430777 is 777034583.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78340201 + 307090576 = 8851^2 + 17524^2 .

It is a cyclic number.

It is not a de Polignac number, because 385430777 - 2¹² = 385426681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385430779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203858 + ... + 205739.

It is an arithmetic number, because the mean of its divisors is an integer number (96460329).

Almost surely, 2^385430777 is an apocalyptic number.

It is an amenable number.

385430777 is a deficient number, since it is larger than the sum of its proper divisors (410539).

385430777 is an equidigital number, since it uses as much as digits as its factorization.

385430777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410538.

The product of its (nonzero) digits is 493920, while the sum is 44.

The square root of 385430777 is about 19632.3910158697. The cubic root of 385430777 is about 727.7498593429.

The spelling of 385430777 in words is "three hundred eighty-five million, four hundred thirty thousand, seven hundred seventy-seven".