989081 has 2 divisors, whose sum is σ = 989082. Its totient is φ = 989080.

The previous prime is 989071. The next prime is 989099. The reversal of 989081 is 180989.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 648025 + 341056 = 805^2 + 584^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-989081 is a prime.

It is a super-2 number, since 2×989081² = 1956562449122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (989011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494540 + 494541.

It is an arithmetic number, because the mean of its divisors is an integer number (494541).

2⁹⁸⁹⁰⁸¹ is an apocalyptic number.

It is an amenable number.

989081 is a deficient number, since it is larger than the sum of its proper divisors (1).

989081 is an equidigital number, since it uses as much as digits as its factorization.

989081 is an evil number, because the sum of its binary digits is even.

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

The square root of 989081 is about 994.5255150070. The cubic root of 989081 is about 99.6347005211.

The spelling of 989081 in words is "nine hundred eighty-nine thousand, eighty-one".