918986 has 16 divisors (see below), whose sum is σ = 1477440. Its totient is φ = 427200.

The previous prime is 918971. The next prime is 918989. The reversal of 918986 is 689819.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (918989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5045 + ... + 5223.

It is an arithmetic number, because the mean of its divisors is an integer number (92340).

2⁹¹⁸⁹⁸⁶ is an apocalyptic number.

918986 is a deficient number, since it is larger than the sum of its proper divisors (558454).

918986 is a wasteful number, since it uses less digits than its factorization.

918986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349.

The product of its digits is 31104, while the sum is 41.

The square root of 918986 is about 958.6375748947. The cubic root of 918986 is about 97.2231374184.

The spelling of 918986 in words is "nine hundred eighteen thousand, nine hundred eighty-six".