89212281 has 8 divisors (see below), whose sum is σ = 120625344. Its totient is φ = 58637040.

The previous prime is 89212271. The next prime is 89212283. The reversal of 89212281 is 18221298.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 89212281 - 2²¹ = 87115129 is a prime.

It is a super-2 number, since 2×89212281² = 15917662162445922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (89212283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209206 + ... + 209631.

It is an arithmetic number, because the mean of its divisors is an integer number (15078168).

Almost surely, 2^89212281 is an apocalyptic number.

It is an amenable number.

89212281 is a deficient number, since it is larger than the sum of its proper divisors (31413063).

89212281 is a wasteful number, since it uses less digits than its factorization.

89212281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418911.

The product of its digits is 4608, while the sum is 33.

The square root of 89212281 is about 9445.2253017067. The cubic root of 89212281 is about 446.8292016964.

The spelling of 89212281 in words is "eighty-nine million, two hundred twelve thousand, two hundred eighty-one".