1323779 has 2 divisors, whose sum is σ = 1323780. Its totient is φ = 1323778.

The previous prime is 1323743. The next prime is 1323797. The reversal of 1323779 is 9773231.

Together with next prime (1323797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1323779 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1323799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661889 + 661890.

It is an arithmetic number, because the mean of its divisors is an integer number (661890).

2^1323779 is an apocalyptic number.

1323779 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323779 is an equidigital number, since it uses as much as digits as its factorization.

1323779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7938, while the sum is 32.

The square root of 1323779 is about 1150.5559525725. Note that the first 3 decimals coincide. The cubic root of 1323779 is about 109.8007135519.

The spelling of 1323779 in words is "one million, three hundred twenty-three thousand, seven hundred seventy-nine".