1271300399 has 2 divisors, whose sum is σ = 1271300400. Its totient is φ = 1271300398.

The previous prime is 1271300291. The next prime is 1271300447. The reversal of 1271300399 is 9930031721.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1271300399 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1271300999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635650199 + 635650200.

It is an arithmetic number, because the mean of its divisors is an integer number (635650200).

Almost surely, 2^1271300399 is an apocalyptic number.

1271300399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1271300399 is an equidigital number, since it uses as much as digits as its factorization.

1271300399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 1271300399 is about 35655.2997322979. The cubic root of 1271300399 is about 1083.3016245604.

The spelling of 1271300399 in words is "one billion, two hundred seventy-one million, three hundred thousand, three hundred ninety-nine".