1327399837 has 2 divisors, whose sum is σ = 1327399838. Its totient is φ = 1327399836.

The previous prime is 1327399781. The next prime is 1327399867. The reversal of 1327399837 is 7389937231.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 820879801 + 506520036 = 28651^2 + 22506^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1327399837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1327399867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663699918 + 663699919.

It is an arithmetic number, because the mean of its divisors is an integer number (663699919).

Almost surely, 2^1327399837 is an apocalyptic number.

It is an amenable number.

1327399837 is a deficient number, since it is larger than the sum of its proper divisors (1).

1327399837 is an equidigital number, since it uses as much as digits as its factorization.

1327399837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1714608, while the sum is 52.

The square root of 1327399837 is about 36433.4988300602. The cubic root of 1327399837 is about 1099.0073240054.

The spelling of 1327399837 in words is "one billion, three hundred twenty-seven million, three hundred ninety-nine thousand, eight hundred thirty-seven".