8195639 has 2 divisors, whose sum is σ = 8195640. Its totient is φ = 8195638.

The previous prime is 8195617. The next prime is 8195647. The reversal of 8195639 is 9365918.

8195639 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 a de Polignac number, because none of the positive numbers 2^k-8195639 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 8195596 and 8195605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8195689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4097819 + 4097820.

It is an arithmetic number, because the mean of its divisors is an integer number (4097820).

Almost surely, 2^8195639 is an apocalyptic number.

8195639 is a deficient number, since it is larger than the sum of its proper divisors (1).

8195639 is an equidigital number, since it uses as much as digits as its factorization.

8195639 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 8195639 is about 2862.8026477562. The cubic root of 8195639 is about 201.6172128659.

The spelling of 8195639 in words is "eight million, one hundred ninety-five thousand, six hundred thirty-nine".