89120161 has 16 divisors (see below), whose sum is σ = 101984400. Its totient is φ = 77269248.

The previous prime is 89120111. The next prime is 89120167. The reversal of 89120161 is 16102198.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 8910225 + 80209936 = 2985^2 + 8956^2 .

It is a cyclic number.

It is not a de Polignac number, because 89120161 - 2⁹ = 89119649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89120167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10755 + ... + 17143.

It is an arithmetic number, because the mean of its divisors is an integer number (6374025).

Almost surely, 2^89120161 is an apocalyptic number.

It is an amenable number.

89120161 is a deficient number, since it is larger than the sum of its proper divisors (12864239).

89120161 is a wasteful number, since it uses less digits than its factorization.

89120161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6468.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 89120161 is about 9440.3475041971. The cubic root of 89120161 is about 446.6753511220.

The spelling of 89120161 in words is "eighty-nine million, one hundred twenty thousand, one hundred sixty-one".