89773 has 4 divisors (see below), whose sum is σ = 90720. Its totient is φ = 88828.

The previous prime is 89767. The next prime is 89779. The reversal of 89773 is 37798.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 37798 = 2 ⋅18899.

It is an interprime number because it is at equal distance from previous prime (89767) and next prime (89779).

It is a cyclic number.

It is not a de Polignac number, because 89773 - 2⁹ = 89261 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89779) 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, 313 + ... + 526.

It is an arithmetic number, because the mean of its divisors is an integer number (22680).

2⁸⁹⁷⁷³ is an apocalyptic number.

It is an amenable number.

89773 is a deficient number, since it is larger than the sum of its proper divisors (947).

89773 is a wasteful number, since it uses less digits than its factorization.

89773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946.

The product of its digits is 10584, while the sum is 34.

The square root of 89773 is about 299.6214278052. The cubic root of 89773 is about 44.7763387491.

The spelling of 89773 in words is "eighty-nine thousand, seven hundred seventy-three".