839844157147 has 2 divisors, whose sum is σ = 839844157148. Its totient is φ = 839844157146.

The previous prime is 839844157091. The next prime is 839844157171. The reversal of 839844157147 is 741751448938.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-839844157147 is a prime.

It is not a weakly prime, because it can be changed into another prime (839844157547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419922078573 + 419922078574.

It is an arithmetic number, because the mean of its divisors is an integer number (419922078574).

Almost surely, 2^839844157147 is an apocalyptic number.

839844157147 is a deficient number, since it is larger than the sum of its proper divisors (1).

839844157147 is an equidigital number, since it uses as much as digits as its factorization.

839844157147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27095040, while the sum is 61.

The spelling of 839844157147 in words is "eight hundred thirty-nine billion, eight hundred forty-four million, one hundred fifty-seven thousand, one hundred forty-seven".