93638 has 4 divisors (see below), whose sum is σ = 140460. Its totient is φ = 46818.

The previous prime is 93637. The next prime is 93683. The reversal of 93638 is 83639.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 93638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (93637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23408 + ... + 23411.

It is an arithmetic number, because the mean of its divisors is an integer number (35115).

2⁹³⁶³⁸ is an apocalyptic number.

93638 is a deficient number, since it is larger than the sum of its proper divisors (46822).

93638 is a wasteful number, since it uses less digits than its factorization.

93638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46821.

The product of its digits is 3888, while the sum is 29.

The square root of 93638 is about 306.0032679564. The cubic root of 93638 is about 45.4099171670.

Subtracting from 93638 its reverse (83639), we obtain a palindrome (9999).

The spelling of 93638 in words is "ninety-three thousand, six hundred thirty-eight".