8219941 has 2 divisors, whose sum is σ = 8219942. Its totient is φ = 8219940.

The previous prime is 8219917. The next prime is 8219969. The reversal of 8219941 is 1499128.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5157441 + 3062500 = 2271^2 + 1750^2 .

It is a cyclic number.

It is not a de Polignac number, because 8219941 - 2⁵ = 8219909 is a prime.

8219941 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 8219897 and 8219906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8219641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4109970 + 4109971.

It is an arithmetic number, because the mean of its divisors is an integer number (4109971).

Almost surely, 2^8219941 is an apocalyptic number.

It is an amenable number.

8219941 is a deficient number, since it is larger than the sum of its proper divisors (1).

8219941 is an equidigital number, since it uses as much as digits as its factorization.

8219941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 34.

The square root of 8219941 is about 2867.0439480413. The cubic root of 8219941 is about 201.8162970596.

The spelling of 8219941 in words is "eight million, two hundred nineteen thousand, nine hundred forty-one".