1307239393 has 2 divisors, whose sum is σ = 1307239394. Its totient is φ = 1307239392.

The previous prime is 1307239391. The next prime is 1307239421. The reversal of 1307239393 is 3939327031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 986399649 + 320839744 = 31407^2 + 17912^2 .

It is a cyclic number.

It is not a de Polignac number, because 1307239393 - 2¹ = 1307239391 is a prime.

It is a super-2 number, since 2×1307239393² = 3417749661222016898, which contains 22 as substring.

Together with 1307239391, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1307239391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 653619696 + 653619697.

It is an arithmetic number, because the mean of its divisors is an integer number (653619697).

Almost surely, 2^1307239393 is an apocalyptic number.

It is an amenable number.

1307239393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1307239393 is an equidigital number, since it uses as much as digits as its factorization.

1307239393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91854, while the sum is 40.

The square root of 1307239393 is about 36155.7656951142. The cubic root of 1307239393 is about 1093.4150371369.

The spelling of 1307239393 in words is "one billion, three hundred seven million, two hundred thirty-nine thousand, three hundred ninety-three".