840339 has 6 divisors (see below), whose sum is σ = 1213836. Its totient is φ = 560220.

The previous prime is 840331. The next prime is 840341. The reversal of 840339 is 933048.

840339 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 840339 - 2³ = 840331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (840331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46677 + ... + 46694.

It is an arithmetic number, because the mean of its divisors is an integer number (202306).

2⁸⁴⁰³³⁹ is an apocalyptic number.

840339 is a deficient number, since it is larger than the sum of its proper divisors (373497).

840339 is a wasteful number, since it uses less digits than its factorization.

840339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93377 (or 93374 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 840339 is about 916.7000599978. The cubic root of 840339 is about 94.3665707426.

The spelling of 840339 in words is "eight hundred forty thousand, three hundred thirty-nine".