854139 has 24 divisors (see below), whose sum is σ = 1355536. Its totient is φ = 475200.

The previous prime is 854129. The next prime is 854141. The reversal of 854139 is 931458.

854139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 854139 - 2⁴ = 854123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (854129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4629 + ... + 4809.

2⁸⁵⁴¹³⁹ is an apocalyptic number.

854139 is a deficient number, since it is larger than the sum of its proper divisors (501397).

854139 is a wasteful number, since it uses less digits than its factorization.

854139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219 (or 208 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 854139 is about 924.1964076970. The cubic root of 854139 is about 94.8803294633.

It can be divided in two parts, 85 and 4139, that added together give a palindrome (4224).

The spelling of 854139 in words is "eight hundred fifty-four thousand, one hundred thirty-nine".