385418777 has 4 divisors (see below), whose sum is σ = 385483956. Its totient is φ = 385353600.

The previous prime is 385418767. The next prime is 385418779. The reversal of 385418777 is 777814583.

It is a happy number.

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 303317056 + 82101721 = 17416^2 + 9061^2 .

It is a cyclic number.

It is not a de Polignac number, because 385418777 - 2²⁰ = 384370201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385418779) 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, 22724 + ... + 35877.

It is an arithmetic number, because the mean of its divisors is an integer number (96370989).

Almost surely, 2^385418777 is an apocalyptic number.

It is an amenable number.

385418777 is a deficient number, since it is larger than the sum of its proper divisors (65179).

385418777 is an equidigital number, since it uses as much as digits as its factorization.

385418777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65178.

The product of its digits is 1317120, while the sum is 50.

The square root of 385418777 is about 19632.0853961060. The cubic root of 385418777 is about 727.7423066776.

The spelling of 385418777 in words is "three hundred eighty-five million, four hundred eighteen thousand, seven hundred seventy-seven".