779749 has 2 divisors, whose sum is σ = 779750. Its totient is φ = 779748.

The previous prime is 779747. The next prime is 779761. The reversal of 779749 is 947977.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 431649 + 348100 = 657^2 + 590^2 .

It is a cyclic number.

It is not a de Polignac number, because 779749 - 2¹ = 779747 is a prime.

Together with 779747, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (779747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 389874 + 389875.

It is an arithmetic number, because the mean of its divisors is an integer number (389875).

2⁷⁷⁹⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

779749 is a deficient number, since it is larger than the sum of its proper divisors (1).

779749 is an equidigital number, since it uses as much as digits as its factorization.

779749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 111132, while the sum is 43.

The square root of 779749 is about 883.0339744313. The cubic root of 779749 is about 92.0417658505.

The spelling of 779749 in words is "seven hundred seventy-nine thousand, seven hundred forty-nine".