938939 has 2 divisors, whose sum is σ = 938940. Its totient is φ = 938938.

The previous prime is 938921. The next prime is 938947. The reversal of 938939 is 939839.

It is a strong prime.

It is an emirp because it is prime and its reverse (939839) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 938939 - 2¹⁶ = 873403 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 938896 and 938905.

It is not a weakly prime, because it can be changed into another prime (938969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469469 + 469470.

It is an arithmetic number, because the mean of its divisors is an integer number (469470).

2⁹³⁸⁹³⁹ is an apocalyptic number.

938939 is a deficient number, since it is larger than the sum of its proper divisors (1).

938939 is an equidigital number, since it uses as much as digits as its factorization.

938939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52488, while the sum is 41.

The square root of 938939 is about 968.9886480243. The cubic root of 938939 is about 97.9217409372.

Subtracting 938939 from its reverse (939839), we obtain a square (900 = 30²).

The spelling of 938939 in words is "nine hundred thirty-eight thousand, nine hundred thirty-nine".