1088999 has 4 divisors (see below), whose sum is σ = 1124160. Its totient is φ = 1053840.

The previous prime is 1088993. The next prime is 1089017. The reversal of 1088999 is 9998801.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1088999 - 2²⁰ = 40423 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1088993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17534 + ... + 17595.

It is an arithmetic number, because the mean of its divisors is an integer number (281040).

2^1088999 is an apocalyptic number.

1088999 is a deficient number, since it is larger than the sum of its proper divisors (35161).

1088999 is an equidigital number, since it uses as much as digits as its factorization.

1088999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35160.

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

The square root of 1088999 is about 1043.5511487225. The cubic root of 1088999 is about 102.8827332895.

The spelling of 1088999 in words is "one million, eighty-eight thousand, nine hundred ninety-nine".