777116849 has 2 divisors, whose sum is σ = 777116850. Its totient is φ = 777116848.

The previous prime is 777116839. The next prime is 777116887. The reversal of 777116849 is 948611777.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 664608400 + 112508449 = 25780^2 + 10607^2 .

It is a cyclic number.

It is not a de Polignac number, because 777116849 - 2¹⁶ = 777051313 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 777116797 and 777116806.

It is not a weakly prime, because it can be changed into another prime (777116839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 388558424 + 388558425.

It is an arithmetic number, because the mean of its divisors is an integer number (388558425).

Almost surely, 2^777116849 is an apocalyptic number.

It is an amenable number.

777116849 is a deficient number, since it is larger than the sum of its proper divisors (1).

777116849 is an equidigital number, since it uses as much as digits as its factorization.

777116849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 592704, while the sum is 50.

The square root of 777116849 is about 27876.8156180006. The cubic root of 777116849 is about 919.3808251084.

The spelling of 777116849 in words is "seven hundred seventy-seven million, one hundred sixteen thousand, eight hundred forty-nine".