385439753077 has 4 divisors (see below), whose sum is σ = 385923367116. Its totient is φ = 384956139040.

The previous prime is 385439753057. The next prime is 385439753087. The reversal of 385439753077 is 770357934583.

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 225092364721 + 160347388356 = 474439^2 + 400434^2 .

It is a cyclic number.

It is not a de Polignac number, because 385439753077 - 2¹⁹ = 385439228789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385439753057) 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, 241805824 + ... + 241807417.

It is an arithmetic number, because the mean of its divisors is an integer number (96480841779).

Almost surely, 2^385439753077 is an apocalyptic number.

It is an amenable number.

385439753077 is a deficient number, since it is larger than the sum of its proper divisors (483614039).

385439753077 is an equidigital number, since it uses as much as digits as its factorization.

385439753077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483614038.

The product of its (nonzero) digits is 66679200, while the sum is 61.

The spelling of 385439753077 in words is "three hundred eighty-five billion, four hundred thirty-nine million, seven hundred fifty-three thousand, seventy-seven".