988091 has 12 divisors (see below), whose sum is σ = 1134672. Its totient is φ = 855168.

The previous prime is 988069. The next prime is 988093. The reversal of 988091 is 190889.

It is a happy number.

It is not a de Polignac number, because 988091 - 2¹⁰ = 987067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (988093) 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 in 11 ways as a sum of consecutive naturals, for example, 3626 + ... + 3888.

It is an arithmetic number, because the mean of its divisors is an integer number (94556).

2⁹⁸⁸⁰⁹¹ is an apocalyptic number.

988091 is a deficient number, since it is larger than the sum of its proper divisors (146581).

988091 is a wasteful number, since it uses less digits than its factorization.

988091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 988091 is about 994.0276656110. The cubic root of 988091 is about 99.6014469986.

The spelling of 988091 in words is "nine hundred eighty-eight thousand, ninety-one".