385487423977 has 2 divisors, whose sum is σ = 385487423978. Its totient is φ = 385487423976.

The previous prime is 385487423911. The next prime is 385487424037. The reversal of 385487423977 is 779324784583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227609143056 + 157878280921 = 477084^2 + 397339^2 .

It is a cyclic number.

It is not a de Polignac number, because 385487423977 - 2²³ = 385479035369 is a prime.

It is not a weakly prime, because it can be changed into another prime (385487423677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192743711988 + 192743711989.

It is an arithmetic number, because the mean of its divisors is an integer number (192743711989).

Almost surely, 2^385487423977 is an apocalyptic number.

It is an amenable number.

385487423977 is a deficient number, since it is larger than the sum of its proper divisors (1).

385487423977 is an equidigital number, since it uses as much as digits as its factorization.

385487423977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 284497920, while the sum is 67.

The spelling of 385487423977 in words is "three hundred eighty-five billion, four hundred eighty-seven million, four hundred twenty-three thousand, nine hundred seventy-seven".