5681939 has 2 divisors, whose sum is σ = 5681940. Its totient is φ = 5681938.

The previous prime is 5681933. The next prime is 5681947. The reversal of 5681939 is 9391865.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5681939 - 2¹² = 5677843 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 5681896 and 5681905.

It is not a weakly prime, because it can be changed into another prime (5681933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2840969 + 2840970.

It is an arithmetic number, because the mean of its divisors is an integer number (2840970).

Almost surely, 2^5681939 is an apocalyptic number.

5681939 is a deficient number, since it is larger than the sum of its proper divisors (1).

5681939 is an equidigital number, since it uses as much as digits as its factorization.

5681939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 41.

The square root of 5681939 is about 2383.6818160149. The cubic root of 5681939 is about 178.4427286600.

The spelling of 5681939 in words is "five million, six hundred eighty-one thousand, nine hundred thirty-nine".