89135281 has 4 divisors (see below), whose sum is σ = 93010752. Its totient is φ = 85259812.

The previous prime is 89135269. The next prime is 89135287. The reversal of 89135281 is 18253198.

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 89135281 - 2¹⁹ = 88610993 is a prime.

It is a super-2 number, since 2×89135281² = 15890196637897922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89135281.

It is not an unprimeable number, because it can be changed into a prime (89135287) 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, 1937701 + ... + 1937746.

It is an arithmetic number, because the mean of its divisors is an integer number (23252688).

Almost surely, 2^89135281 is an apocalyptic number.

It is an amenable number.

89135281 is a deficient number, since it is larger than the sum of its proper divisors (3875471).

89135281 is a wasteful number, since it uses less digits than its factorization.

89135281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3875470.

The product of its digits is 17280, while the sum is 37.

The square root of 89135281 is about 9441.1482882116. The cubic root of 89135281 is about 446.7006104622.

The spelling of 89135281 in words is "eighty-nine million, one hundred thirty-five thousand, two hundred eighty-one".