938881 has 2 divisors, whose sum is σ = 938882. Its totient is φ = 938880.

The previous prime is 938879. The next prime is 938921. The reversal of 938881 is 188839.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 810000 + 128881 = 900^2 + 359^2 .

It is a cyclic number.

It is not a de Polignac number, because 938881 - 2¹ = 938879 is a prime.

It is a super-2 number, since 2×938881² = 1762995064322, which contains 22 as substring.

Together with 938879, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 938881.

It is not a weakly prime, because it can be changed into another prime (938831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469440 + 469441.

It is an arithmetic number, because the mean of its divisors is an integer number (469441).

2⁹³⁸⁸⁸¹ is an apocalyptic number.

It is an amenable number.

938881 is a deficient number, since it is larger than the sum of its proper divisors (1).

938881 is an equidigital number, since it uses as much as digits as its factorization.

938881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 37.

The square root of 938881 is about 968.9587194509. The cubic root of 938881 is about 97.9197246266.

The spelling of 938881 in words is "nine hundred thirty-eight thousand, eight hundred eighty-one".