994839 has 4 divisors (see below), whose sum is σ = 1326456. Its totient is φ = 663224.

The previous prime is 994837. The next prime is 994853. The reversal of 994839 is 938499.

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

It is a cyclic number.

It is not a de Polignac number, because 994839 - 2¹ = 994837 is a prime.

It is a D-number.

994839 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 994839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (994831) 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, 165804 + ... + 165809.

It is an arithmetic number, because the mean of its divisors is an integer number (331614).

2⁹⁹⁴⁸³⁹ is an apocalyptic number.

994839 is a deficient number, since it is larger than the sum of its proper divisors (331617).

994839 is a wasteful number, since it uses less digits than its factorization.

994839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331616.

The product of its digits is 69984, while the sum is 42.

The square root of 994839 is about 997.4161618903. The cubic root of 994839 is about 99.8276698605.

The spelling of 994839 in words is "nine hundred ninety-four thousand, eight hundred thirty-nine".