89638 has 4 divisors (see below), whose sum is σ = 134460. Its totient is φ = 44818.

The previous prime is 89633. The next prime is 89653. The reversal of 89638 is 83698.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83698 = 2 ⋅41849.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89633) by changing a digit.

89638 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22408 + ... + 22411.

It is an arithmetic number, because the mean of its divisors is an integer number (33615).

2⁸⁹⁶³⁸ is an apocalyptic number.

89638 is a deficient number, since it is larger than the sum of its proper divisors (44822).

89638 is a wasteful number, since it uses less digits than its factorization.

89638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44821.

The product of its digits is 10368, while the sum is 34.

The square root of 89638 is about 299.3960587583. The cubic root of 89638 is about 44.7538827088.

It can be divided in two parts, 89 and 638, that added together give a palindrome (727).

The spelling of 89638 in words is "eighty-nine thousand, six hundred thirty-eight".