1397046517 has 2 divisors, whose sum is σ = 1397046518. Its totient is φ = 1397046516.

The previous prime is 1397046467. The next prime is 1397046523. The reversal of 1397046517 is 7156407931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1360576996 + 36469521 = 36886^2 + 6039^2 .

It is a cyclic number.

It is not a de Polignac number, because 1397046517 - 2¹¹ = 1397044469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1397046017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698523258 + 698523259.

It is an arithmetic number, because the mean of its divisors is an integer number (698523259).

Almost surely, 2^1397046517 is an apocalyptic number.

It is an amenable number.

1397046517 is a deficient number, since it is larger than the sum of its proper divisors (1).

1397046517 is an equidigital number, since it uses as much as digits as its factorization.

1397046517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 43.

The square root of 1397046517 is about 37377.0854535235. The cubic root of 1397046517 is about 1117.9017147179.

The spelling of 1397046517 in words is "one billion, three hundred ninety-seven million, forty-six thousand, five hundred seventeen".