172094393 has 4 divisors (see below), whose sum is σ = 173868660. Its totient is φ = 170320128.

The previous prime is 172094389. The next prime is 172094407. The reversal of 172094393 is 393490271.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 120714169 + 51380224 = 10987^2 + 7168^2 .

It is a cyclic number.

It is not a de Polignac number, because 172094393 - 2² = 172094389 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (172094353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 886988 + ... + 887181.

It is an arithmetic number, because the mean of its divisors is an integer number (43467165).

Almost surely, 2^172094393 is an apocalyptic number.

It is an amenable number.

172094393 is a deficient number, since it is larger than the sum of its proper divisors (1774267).

172094393 is an equidigital number, since it uses as much as digits as its factorization.

172094393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774266.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 172094393 is about 13118.4752543884. The cubic root of 172094393 is about 556.2314920745.

The spelling of 172094393 in words is "one hundred seventy-two million, ninety-four thousand, three hundred ninety-three".