899918 has 4 divisors (see below), whose sum is σ = 1349880. Its totient is φ = 449958.

The previous prime is 899917. The next prime is 899939. The reversal of 899918 is 819998.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 819998 = 2 ⋅409999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899917) 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 as a sum of consecutive naturals, namely, 224978 + ... + 224981.

It is an arithmetic number, because the mean of its divisors is an integer number (337470).

2⁸⁹⁹⁹¹⁸ is an apocalyptic number.

899918 is a deficient number, since it is larger than the sum of its proper divisors (449962).

899918 is a wasteful number, since it uses less digits than its factorization.

899918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449961.

The product of its digits is 46656, while the sum is 44.

The square root of 899918 is about 948.6400792714. The cubic root of 899918 is about 96.5460061445.

The spelling of 899918 in words is "eight hundred ninety-nine thousand, nine hundred eighteen".