17197993 has 2 divisors, whose sum is σ = 17197994. Its totient is φ = 17197992.

The previous prime is 17197927. The next prime is 17198009. The reversal of 17197993 is 39979171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17040384 + 157609 = 4128^2 + 397^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17197993 is a prime.

It is not a weakly prime, because it can be changed into another prime (17197393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8598996 + 8598997.

It is an arithmetic number, because the mean of its divisors is an integer number (8598997).

Almost surely, 2^17197993 is an apocalyptic number.

It is an amenable number.

17197993 is a deficient number, since it is larger than the sum of its proper divisors (1).

17197993 is an equidigital number, since it uses as much as digits as its factorization.

17197993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 107163, while the sum is 46.

The square root of 17197993 is about 4147.0462982706. The cubic root of 17197993 is about 258.1225355877.

The spelling of 17197993 in words is "seventeen million, one hundred ninety-seven thousand, nine hundred ninety-three".