1397330047 has 2 divisors, whose sum is σ = 1397330048. Its totient is φ = 1397330046.

The previous prime is 1397330029. The next prime is 1397330083. The reversal of 1397330047 is 7400337931.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1397330047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1397329988 and 1397330015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1397330747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698665023 + 698665024.

It is an arithmetic number, because the mean of its divisors is an integer number (698665024).

Almost surely, 2^1397330047 is an apocalyptic number.

1397330047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1397330047 is an equidigital number, since it uses as much as digits as its factorization.

1397330047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47628, while the sum is 37.

The square root of 1397330047 is about 37380.8780929501. The cubic root of 1397330047 is about 1117.9773354959.

Adding to 1397330047 its reverse (7400337931), we get a palindrome (8797667978).

The spelling of 1397330047 in words is "one billion, three hundred ninety-seven million, three hundred thirty thousand, forty-seven".