1397009347 has 2 divisors, whose sum is σ = 1397009348. Its totient is φ = 1397009346.

The previous prime is 1397009303. The next prime is 1397009363. The reversal of 1397009347 is 7439007931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1397009347 is a prime.

It is not a weakly prime, because it can be changed into another prime (1397009387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698504673 + 698504674.

It is an arithmetic number, because the mean of its divisors is an integer number (698504674).

Almost surely, 2^1397009347 is an apocalyptic number.

1397009347 is a deficient number, since it is larger than the sum of its proper divisors (1).

1397009347 is an equidigital number, since it uses as much as digits as its factorization.

1397009347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 142884, while the sum is 43.

The square root of 1397009347 is about 37376.5882204355. The cubic root of 1397009347 is about 1117.8918002842.

The spelling of 1397009347 in words is "one billion, three hundred ninety-seven million, nine thousand, three hundred forty-seven".