1147391347 has 2 divisors, whose sum is σ = 1147391348. Its totient is φ = 1147391346.

The previous prime is 1147391341. The next prime is 1147391359. The reversal of 1147391347 is 7431937411.

It is a weak prime.

It is an emirp because it is prime and its reverse (7431937411) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1147391347 is a prime.

It is not a weakly prime, because it can be changed into another prime (1147391341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 573695673 + 573695674.

It is an arithmetic number, because the mean of its divisors is an integer number (573695674).

Almost surely, 2^1147391347 is an apocalyptic number.

1147391347 is a deficient number, since it is larger than the sum of its proper divisors (1).

1147391347 is an equidigital number, since it uses as much as digits as its factorization.

1147391347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 40.

The square root of 1147391347 is about 33873.1655887075. The cubic root of 1147391347 is about 1046.8967625469.

The spelling of 1147391347 in words is "one billion, one hundred forty-seven million, three hundred ninety-one thousand, three hundred forty-seven".