6619139 has 2 divisors, whose sum is σ = 6619140. Its totient is φ = 6619138.

The previous prime is 6619111. The next prime is 6619141. The reversal of 6619139 is 9319166.

6619139 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6619139 - 2¹² = 6615043 is a prime.

It is a super-2 number, since 2×6619139² = 87626002202642, which contains 22 as substring.

Together with 6619141, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6619099 and 6619108.

It is not a weakly prime, because it can be changed into another prime (6619159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3309569 + 3309570.

It is an arithmetic number, because the mean of its divisors is an integer number (3309570).

Almost surely, 2^6619139 is an apocalyptic number.

6619139 is a deficient number, since it is larger than the sum of its proper divisors (1).

6619139 is an equidigital number, since it uses as much as digits as its factorization.

6619139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 35.

The square root of 6619139 is about 2572.7687420365. The cubic root of 6619139 is about 187.7588862362.

The spelling of 6619139 in words is "six million, six hundred nineteen thousand, one hundred thirty-nine".