840338 has 8 divisors (see below), whose sum is σ = 1274940. Its totient is φ = 415360.

The previous prime is 840331. The next prime is 840341. The reversal of 840338 is 833048.

It can be written as a sum of positive squares in 2 ways, for example, as 822649 + 17689 = 907^2 + 133^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 840338.

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 3 ways as a sum of consecutive naturals, for example, 2183 + ... + 2538.

2⁸⁴⁰³³⁸ is an apocalyptic number.

840338 is a deficient number, since it is larger than the sum of its proper divisors (434602).

840338 is a wasteful number, since it uses less digits than its factorization.

840338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4812.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 840338 is about 916.6995145630. The cubic root of 840338 is about 94.3665333106.

The spelling of 840338 in words is "eight hundred forty thousand, three hundred thirty-eight".