385109 has 2 divisors, whose sum is σ = 385110. Its totient is φ = 385108.

The previous prime is 385087. The next prime is 385127. The reversal of 385109 is 901583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207025 + 178084 = 455^2 + 422^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385109 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192554 + 192555.

It is an arithmetic number, because the mean of its divisors is an integer number (192555).

2³⁸⁵¹⁰⁹ is an apocalyptic number.

It is an amenable number.

385109 is a deficient number, since it is larger than the sum of its proper divisors (1).

385109 is an equidigital number, since it uses as much as digits as its factorization.

385109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 385109 is about 620.5715107866. The cubic root of 385109 is about 72.7547282229.

It can be divided in two parts, 385 and 109, that added together give a palindrome (494).

The spelling of 385109 in words is "three hundred eighty-five thousand, one hundred nine".