89919 has 12 divisors (see below), whose sum is σ = 132496. Its totient is φ = 58752.

The previous prime is 89917. The next prime is 89923. The reversal of 89919 is 91998.

It is not a de Polignac number, because 89919 - 2¹ = 89917 is a prime.

It is a super-2 number, since 2×89919² = 16170853122, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89917) 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 11 ways as a sum of consecutive naturals, for example, 822 + ... + 924.

2⁸⁹⁹¹⁹ is an apocalyptic number.

89919 is a deficient number, since it is larger than the sum of its proper divisors (42577).

89919 is a wasteful number, since it uses less digits than its factorization.

89919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 203 counting only the distinct ones).

The product of its digits is 5832, while the sum is 36.

The square root of 89919 is about 299.8649696113. The cubic root of 89919 is about 44.8005992160.

The spelling of 89919 in words is "eighty-nine thousand, nine hundred nineteen".