999118 has 4 divisors (see below), whose sum is σ = 1498680. Its totient is φ = 499558.

The previous prime is 999101. The next prime is 999133. The reversal of 999118 is 811999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 811999 = 137 ⋅5927.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249778 + ... + 249781.

It is an arithmetic number, because the mean of its divisors is an integer number (374670).

2⁹⁹⁹¹¹⁸ is an apocalyptic number.

999118 is a deficient number, since it is larger than the sum of its proper divisors (499562).

999118 is a wasteful number, since it uses less digits than its factorization.

999118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499561.

The product of its digits is 5832, while the sum is 37.

The square root of 999118 is about 999.5589027166. The cubic root of 999118 is about 99.9705913522.

The spelling of 999118 in words is "nine hundred ninety-nine thousand, one hundred eighteen".