1347238999 has 2 divisors, whose sum is σ = 1347239000. Its totient is φ = 1347238998.

The previous prime is 1347238979. The next prime is 1347239021. The reversal of 1347238999 is 9998327431.

It is a weak prime.

It is an emirp because it is prime and its reverse (9998327431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1347238999 - 2¹¹ = 1347236951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1347238969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 673619499 + 673619500.

It is an arithmetic number, because the mean of its divisors is an integer number (673619500).

Almost surely, 2^1347238999 is an apocalyptic number.

1347238999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1347238999 is an equidigital number, since it uses as much as digits as its factorization.

1347238999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2939328, while the sum is 55.

The square root of 1347238999 is about 36704.7544468016. The cubic root of 1347238999 is about 1104.4554824201.

The spelling of 1347238999 in words is "one billion, three hundred forty-seven million, two hundred thirty-eight thousand, nine hundred ninety-nine".