994139 has 4 divisors (see below), whose sum is σ = 1026240. Its totient is φ = 962040.

The previous prime is 994093. The next prime is 994141. The reversal of 994139 is 931499.

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 994139 - 2¹² = 990043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 994099 and 994108.

It is not an unprimeable number, because it can be changed into a prime (994199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16004 + ... + 16065.

It is an arithmetic number, because the mean of its divisors is an integer number (256560).

2⁹⁹⁴¹³⁹ is an apocalyptic number.

994139 is a deficient number, since it is larger than the sum of its proper divisors (32101).

994139 is a wasteful number, since it uses less digits than its factorization.

994139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32100.

The product of its digits is 8748, while the sum is 35.

The square root of 994139 is about 997.0651934553. The cubic root of 994139 is about 99.8042504043.

The spelling of 994139 in words is "nine hundred ninety-four thousand, one hundred thirty-nine".