154839 has 4 divisors (see below), whose sum is σ = 206456. Its totient is φ = 103224.

The previous prime is 154823. The next prime is 154841. The reversal of 154839 is 938451.

154839 is an esthetic number in base 3, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 154839 - 2⁴ = 154823 is a prime.

It is a D-number.

It is a Duffinian number.

154839 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25804 + ... + 25809.

It is an arithmetic number, because the mean of its divisors is an integer number (51614).

2¹⁵⁴⁸³⁹ is an apocalyptic number.

154839 is a deficient number, since it is larger than the sum of its proper divisors (51617).

154839 is an equidigital number, since it uses as much as digits as its factorization.

154839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51616.

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

The square root of 154839 is about 393.4958703722. The cubic root of 154839 is about 53.6982483676.

The spelling of 154839 in words is "one hundred fifty-four thousand, eight hundred thirty-nine".