989035081 has 2 divisors, whose sum is σ = 989035082. Its totient is φ = 989035080.

The previous prime is 989035057. The next prime is 989035097. The reversal of 989035081 is 180530989.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 837523600 + 151511481 = 28940^2 + 12309^2 .

It is a cyclic number.

It is not a de Polignac number, because 989035081 - 2¹¹ = 989033033 is a prime.

It is a super-2 number, since 2×989035081² = 1956380782897353122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (989035001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494517540 + 494517541.

It is an arithmetic number, because the mean of its divisors is an integer number (494517541).

Almost surely, 2^989035081 is an apocalyptic number.

It is an amenable number.

989035081 is a deficient number, since it is larger than the sum of its proper divisors (1).

989035081 is an equidigital number, since it uses as much as digits as its factorization.

989035081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 989035081 is about 31448.9281375375. The cubic root of 989035081 is about 996.3315861958.

The spelling of 989035081 in words is "nine hundred eighty-nine million, thirty-five thousand, eighty-one".