170993093 has 2 divisors, whose sum is σ = 170993094. Its totient is φ = 170993092.

The previous prime is 170993071. The next prime is 170993099. The reversal of 170993093 is 390399071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149768644 + 21224449 = 12238^2 + 4607^2 .

It is an emirp because it is prime and its reverse (390399071) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 170993093 - 2⁶ = 170993029 is a prime.

It is equal to p_9555467 and since 170993093 and 9555467 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 170993093.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (170993099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85496546 + 85496547.

It is an arithmetic number, because the mean of its divisors is an integer number (85496547).

Almost surely, 2^170993093 is an apocalyptic number.

It is an amenable number.

170993093 is a deficient number, since it is larger than the sum of its proper divisors (1).

170993093 is an equidigital number, since it uses as much as digits as its factorization.

170993093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45927, while the sum is 41.

The square root of 170993093 is about 13076.4327322095. The cubic root of 170993093 is about 555.0424370332.

The spelling of 170993093 in words is "one hundred seventy million, nine hundred ninety-three thousand, ninety-three".