85984161 has 4 divisors (see below), whose sum is σ = 114645552. Its totient is φ = 57322772.

The previous prime is 85984141. The next prime is 85984163. The reversal of 85984161 is 16148958.

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 85984161 - 2¹⁰ = 85983137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85984163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14330691 + ... + 14330696.

It is an arithmetic number, because the mean of its divisors is an integer number (28661388).

Almost surely, 2^85984161 is an apocalyptic number.

It is an amenable number.

85984161 is a deficient number, since it is larger than the sum of its proper divisors (28661391).

85984161 is a wasteful number, since it uses less digits than its factorization.

85984161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28661390.

The product of its digits is 69120, while the sum is 42.

The square root of 85984161 is about 9272.7644745243. The cubic root of 85984161 is about 441.3733963539.

The spelling of 85984161 in words is "eighty-five million, nine hundred eighty-four thousand, one hundred sixty-one".