89842 has 8 divisors (see below), whose sum is σ = 139500. Its totient is φ = 43344.

The previous prime is 89839. The next prime is 89849. The reversal of 89842 is 24898.

It can be written as a sum of positive squares in 2 ways, for example, as 89401 + 441 = 299^2 + 21^2 .

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (89849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 717 + ... + 832.

2⁸⁹⁸⁴² is an apocalyptic number.

89842 is a deficient number, since it is larger than the sum of its proper divisors (49658).

89842 is a wasteful number, since it uses less digits than its factorization.

89842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580.

The product of its digits is 4608, while the sum is 31.

The square root of 89842 is about 299.7365509910. The cubic root of 89842 is about 44.7878075877.

The spelling of 89842 in words is "eighty-nine thousand, eight hundred forty-two".