17397939499 has 2 divisors, whose sum is σ = 17397939500. Its totient is φ = 17397939498.

The previous prime is 17397939491. The next prime is 17397939509. The reversal of 17397939499 is 99493979371.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 17397939499 - 2³ = 17397939491 is a prime.

It is not a weakly prime, because it can be changed into another prime (17397939491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8698969749 + 8698969750.

It is an arithmetic number, because the mean of its divisors is an integer number (8698969750).

Almost surely, 2^17397939499 is an apocalyptic number.

17397939499 is a deficient number, since it is larger than the sum of its proper divisors (1).

17397939499 is an equidigital number, since it uses as much as digits as its factorization.

17397939499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104162436, while the sum is 70.

The spelling of 17397939499 in words is "seventeen billion, three hundred ninety-seven million, nine hundred thirty-nine thousand, four hundred ninety-nine".