1118989 has 8 divisors (see below), whose sum is σ = 1168992. Its totient is φ = 1070160.

The previous prime is 1118987. The next prime is 1118993. The reversal of 1118989 is 9898111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1118989 - 2¹ = 1118987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118987) 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, 2034 + ... + 2524.

It is an arithmetic number, because the mean of its divisors is an integer number (146124).

2^1118989 is an apocalyptic number.

It is an amenable number.

1118989 is a deficient number, since it is larger than the sum of its proper divisors (50003).

1118989 is an equidigital number, since it uses as much as digits as its factorization.

1118989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587.

The product of its digits is 5184, while the sum is 37.

The square root of 1118989 is about 1057.8227639827. The cubic root of 1118989 is about 103.8186249424.

The spelling of 1118989 in words is "one million, one hundred eighteen thousand, nine hundred eighty-nine".