989117 has 4 divisors (see below), whose sum is σ = 1021056. Its totient is φ = 957180.

The previous prime is 989099. The next prime is 989119. The reversal of 989117 is 711989.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 711989 = 137 ⋅5197.

It is a cyclic number.

It is not a de Polignac number, because 989117 - 2⁸ = 988861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 989117.

It is not an unprimeable number, because it can be changed into a prime (989119) 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, 15923 + ... + 15984.

It is an arithmetic number, because the mean of its divisors is an integer number (255264).

2⁹⁸⁹¹¹⁷ is an apocalyptic number.

It is an amenable number.

989117 is a deficient number, since it is larger than the sum of its proper divisors (31939).

989117 is a wasteful number, since it uses less digits than its factorization.

989117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31938.

The product of its digits is 4536, while the sum is 35.

The square root of 989117 is about 994.5436139255. The cubic root of 989117 is about 99.6359093219.

The spelling of 989117 in words is "nine hundred eighty-nine thousand, one hundred seventeen".