768825839 has 2 divisors, whose sum is σ = 768825840. Its totient is φ = 768825838.

The previous prime is 768825821. The next prime is 768825851. The reversal of 768825839 is 938528867.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-768825839 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (768825539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384412919 + 384412920.

It is an arithmetic number, because the mean of its divisors is an integer number (384412920).

Almost surely, 2^768825839 is an apocalyptic number.

768825839 is a deficient number, since it is larger than the sum of its proper divisors (1).

768825839 is an equidigital number, since it uses as much as digits as its factorization.

768825839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5806080, while the sum is 56.

The square root of 768825839 is about 27727.7088667636. The cubic root of 768825839 is about 916.0995228688.

The spelling of 768825839 in words is "seven hundred sixty-eight million, eight hundred twenty-five thousand, eight hundred thirty-nine".