1297189039 has 2 divisors, whose sum is σ = 1297189040. Its totient is φ = 1297189038.

The previous prime is 1297188947. The next prime is 1297189067. The reversal of 1297189039 is 9309817921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1297189039 - 2¹³ = 1297180847 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1297188983 and 1297189001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1297180039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648594519 + 648594520.

It is an arithmetic number, because the mean of its divisors is an integer number (648594520).

Almost surely, 2^1297189039 is an apocalyptic number.

1297189039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1297189039 is an equidigital number, since it uses as much as digits as its factorization.

1297189039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 1297189039 is about 36016.5106444253. The cubic root of 1297189039 is about 1090.6056839123.

The spelling of 1297189039 in words is "one billion, two hundred ninety-seven million, one hundred eighty-nine thousand, thirty-nine".