1389418097 has 2 divisors, whose sum is σ = 1389418098. Its totient is φ = 1389418096.

The previous prime is 1389418067. The next prime is 1389418157. The reversal of 1389418097 is 7908149831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1367224576 + 22193521 = 36976^2 + 4711^2 .

It is an emirp because it is prime and its reverse (7908149831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1389418097 - 2⁶ = 1389418033 is a prime.

It is a super-2 number, since 2×1389418097² = 3860965296542202818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1389418057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694709048 + 694709049.

It is an arithmetic number, because the mean of its divisors is an integer number (694709049).

Almost surely, 2^1389418097 is an apocalyptic number.

It is an amenable number.

1389418097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1389418097 is an equidigital number, since it uses as much as digits as its factorization.

1389418097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 50.

The square root of 1389418097 is about 37274.8990206546. The cubic root of 1389418097 is about 1115.8632732146.

The spelling of 1389418097 in words is "one billion, three hundred eighty-nine million, four hundred eighteen thousand, ninety-seven".