89164861 has 4 divisors (see below), whose sum is σ = 89237500. Its totient is φ = 89092224.

The previous prime is 89164841. The next prime is 89164883. The reversal of 89164861 is 16846198.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 70459236 + 18705625 = 8394^2 + 4325^2 .

It is a cyclic number.

It is not a de Polignac number, because 89164861 - 2⁹ = 89164349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89164811) 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, 34446 + ... + 36943.

It is an arithmetic number, because the mean of its divisors is an integer number (22309375).

Almost surely, 2^89164861 is an apocalyptic number.

It is an amenable number.

89164861 is a deficient number, since it is larger than the sum of its proper divisors (72639).

89164861 is a wasteful number, since it uses less digits than its factorization.

89164861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72638.

The product of its digits is 82944, while the sum is 43.

The square root of 89164861 is about 9442.7147049988. The cubic root of 89164861 is about 446.7500182931.

The spelling of 89164861 in words is "eighty-nine million, one hundred sixty-four thousand, eight hundred sixty-one".