385705445 has 6 divisors (see below), whose sum is σ = 462899238. Its totient is φ = 308529224.

The previous prime is 385705429. The next prime is 385705447. The reversal of 385705445 is 544507583.

It can be written as a sum of positive squares in only one way, i.e., 308564356 + 77141089 = 17566^2 + 8783^2 .

It is not a de Polignac number, because 385705445 - 2⁴ = 385705429 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 (385705447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39524 + ... + 48306.

It is an arithmetic number, because the mean of its divisors is an integer number (77149873).

Almost surely, 2^385705445 is an apocalyptic number.

It is an amenable number.

385705445 is a deficient number, since it is larger than the sum of its proper divisors (77193793).

385705445 is an frugal number, since it uses more digits than its factorization.

385705445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17571 (or 8788 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 41.

The square root of 385705445 is about 19639.3850463807. The cubic root of 385705445 is about 727.9226894566.

The spelling of 385705445 in words is "three hundred eighty-five million, seven hundred five thousand, four hundred forty-five".