994138 has 4 divisors (see below), whose sum is σ = 1491210. Its totient is φ = 497068.

The previous prime is 994093. The next prime is 994141. The reversal of 994138 is 831499.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 831499 = 229 ⋅3631.

It can be written as a sum of positive squares in only one way, i.e., 935089 + 59049 = 967^2 + 243^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248533 + ... + 248536.

2⁹⁹⁴¹³⁸ is an apocalyptic number.

994138 is a deficient number, since it is larger than the sum of its proper divisors (497072).

994138 is a wasteful number, since it uses less digits than its factorization.

994138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497071.

The product of its digits is 7776, while the sum is 34.

The square root of 994138 is about 997.0646919834. The cubic root of 994138 is about 99.8042169401.

The spelling of 994138 in words is "nine hundred ninety-four thousand, one hundred thirty-eight".