385139 has 2 divisors, whose sum is σ = 385140. Its totient is φ = 385138.

The previous prime is 385129. The next prime is 385141. The reversal of 385139 is 931583.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385139 is a prime.

Together with 385141, it forms a pair of twin primes.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 385139.

It is not a weakly prime, because it can be changed into another prime (385109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192569 + 192570.

It is an arithmetic number, because the mean of its divisors is an integer number (192570).

2³⁸⁵¹³⁹ is an apocalyptic number.

385139 is a deficient number, since it is larger than the sum of its proper divisors (1).

385139 is an equidigital number, since it uses as much as digits as its factorization.

385139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 29.

The square root of 385139 is about 620.5956815834. The cubic root of 385139 is about 72.7566173722.

The spelling of 385139 in words is "three hundred eighty-five thousand, one hundred thirty-nine".