6779473249 has 2 divisors, whose sum is σ = 6779473250. Its totient is φ = 6779473248.

The previous prime is 6779473247. The next prime is 6779473291. The reversal of 6779473249 is 9423749776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5882890000 + 896583249 = 76700^2 + 29943^2 .

It is a cyclic number.

It is not a de Polignac number, because 6779473249 - 2¹ = 6779473247 is a prime.

It is a super-2 number, since 2×6779473249² = 91922515067813232002, which contains 22 as substring.

Together with 6779473247, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 6779473193 and 6779473202.

It is not a weakly prime, because it can be changed into another prime (6779473247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3389736624 + 3389736625.

It is an arithmetic number, because the mean of its divisors is an integer number (3389736625).

Almost surely, 2^6779473249 is an apocalyptic number.

It is an amenable number.

6779473249 is a deficient number, since it is larger than the sum of its proper divisors (1).

6779473249 is an equidigital number, since it uses as much as digits as its factorization.

6779473249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16003008, while the sum is 58.

The square root of 6779473249 is about 82337.5567344575. The cubic root of 6779473249 is about 1892.6282452282.

The spelling of 6779473249 in words is "six billion, seven hundred seventy-nine million, four hundred seventy-three thousand, two hundred forty-nine".