989170027 has 2 divisors, whose sum is σ = 989170028. Its totient is φ = 989170026.

The previous prime is 989169983. The next prime is 989170033. The reversal of 989170027 is 720071989.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 989170027 - 2¹⁹ = 988645739 is a prime.

It is not a weakly prime, because it can be changed into another prime (989170067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494585013 + 494585014.

It is an arithmetic number, because the mean of its divisors is an integer number (494585014).

Almost surely, 2^989170027 is an apocalyptic number.

989170027 is a deficient number, since it is larger than the sum of its proper divisors (1).

989170027 is an equidigital number, since it uses as much as digits as its factorization.

989170027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 989170027 is about 31451.0735428856. The cubic root of 989170027 is about 996.3768979851.

The spelling of 989170027 in words is "nine hundred eighty-nine million, one hundred seventy thousand, twenty-seven".