938891 has 4 divisors (see below), whose sum is σ = 940872. Its totient is φ = 936912.

The previous prime is 938881. The next prime is 938921. The reversal of 938891 is 198839.

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

It is a cyclic number.

It is not a de Polignac number, because 938891 - 2⁶ = 938827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (938831) 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, 191 + ... + 1383.

It is an arithmetic number, because the mean of its divisors is an integer number (235218).

2⁹³⁸⁸⁹¹ is an apocalyptic number.

938891 is a deficient number, since it is larger than the sum of its proper divisors (1981).

938891 is a wasteful number, since it uses less digits than its factorization.

938891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980.

The product of its digits is 15552, while the sum is 38.

The square root of 938891 is about 968.9638796157. The cubic root of 938891 is about 97.9200722723.

The spelling of 938891 in words is "nine hundred thirty-eight thousand, eight hundred ninety-one".