989701161 has 4 divisors (see below), whose sum is σ = 1319601552. Its totient is φ = 659800772.

The previous prime is 989701157. The next prime is 989701169. The reversal of 989701161 is 161107989.

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.

It is a cyclic number.

It is not a de Polignac number, because 989701161 - 2² = 989701157 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (989701169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164950191 + ... + 164950196.

It is an arithmetic number, because the mean of its divisors is an integer number (329900388).

Almost surely, 2^989701161 is an apocalyptic number.

It is an amenable number.

989701161 is a deficient number, since it is larger than the sum of its proper divisors (329900391).

989701161 is a wasteful number, since it uses less digits than its factorization.

989701161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329900390.

The product of its (nonzero) digits is 27216, while the sum is 42.

The square root of 989701161 is about 31459.5162232352. The cubic root of 989701161 is about 996.5552006502. Note that the first 3 decimals are identical.

The spelling of 989701161 in words is "nine hundred eighty-nine million, seven hundred one thousand, one hundred sixty-one".