89384681 has 4 divisors (see below), whose sum is σ = 89437764. Its totient is φ = 89331600.

The previous prime is 89384663. The next prime is 89384689. The reversal of 89384681 is 18648398.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18648398 = 2 ⋅9324199.

It can be written as a sum of positive squares in 2 ways, for example, as 26832400 + 62552281 = 5180^2 + 7909^2 .

It is a cyclic number.

It is not a de Polignac number, because 89384681 - 2¹⁴ = 89368297 is a prime.

It is a super-2 number, since 2×89384681² = 15979242394943522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89384689) 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, 23930 + ... + 27411.

It is an arithmetic number, because the mean of its divisors is an integer number (22359441).

Almost surely, 2^89384681 is an apocalyptic number.

It is an amenable number.

89384681 is a deficient number, since it is larger than the sum of its proper divisors (53083).

89384681 is a wasteful number, since it uses less digits than its factorization.

89384681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53082.

The product of its digits is 331776, while the sum is 47.

The square root of 89384681 is about 9454.3472011557. The cubic root of 89384681 is about 447.1168444035.

The spelling of 89384681 in words is "eighty-nine million, three hundred eighty-four thousand, six hundred eighty-one".