938981 has 2 divisors, whose sum is σ = 938982. Its totient is φ = 938980.

The previous prime is 938969. The next prime is 938983. The reversal of 938981 is 189839.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 902500 + 36481 = 950^2 + 191^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-938981 is a prime.

It is a super-2 number, since 2×938981² = 1763370636722, which contains 22 as substring.

Together with 938983, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 938981.

It is not a weakly prime, because it can be changed into another prime (938983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469490 + 469491.

It is an arithmetic number, because the mean of its divisors is an integer number (469491).

2⁹³⁸⁹⁸¹ is an apocalyptic number.

It is an amenable number.

938981 is a deficient number, since it is larger than the sum of its proper divisors (1).

938981 is an equidigital number, since it uses as much as digits as its factorization.

938981 is an evil number, because the sum of its binary digits is even.

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

The square root of 938981 is about 969.0103198625. The cubic root of 938981 is about 97.9232009723.

The spelling of 938981 in words is "nine hundred thirty-eight thousand, nine hundred eighty-one".