993206173 has 2 divisors, whose sum is σ = 993206174. Its totient is φ = 993206172.

The previous prime is 993206143. The next prime is 993206189. The reversal of 993206173 is 371602399.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 991809049 + 1397124 = 31493^2 + 1182^2 .

It is a cyclic number.

It is not a de Polignac number, because 993206173 - 2⁵ = 993206141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993206143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496603086 + 496603087.

It is an arithmetic number, because the mean of its divisors is an integer number (496603087).

Almost surely, 2^993206173 is an apocalyptic number.

It is an amenable number.

993206173 is a deficient number, since it is larger than the sum of its proper divisors (1).

993206173 is an equidigital number, since it uses as much as digits as its factorization.

993206173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 40.

The square root of 993206173 is about 31515.1736945872. The cubic root of 993206173 is about 997.7302431014.

The spelling of 993206173 in words is "nine hundred ninety-three million, two hundred six thousand, one hundred seventy-three".