8172194 has 4 divisors (see below), whose sum is σ = 12258294. Its totient is φ = 4086096.

The previous prime is 8172181. The next prime is 8172209. The reversal of 8172194 is 4912718.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4912718 = 2 ⋅2456359.

It can be written as a sum of positive squares in only one way, i.e., 7590025 + 582169 = 2755^2 + 763^2 .

It is a super-3 number, since 3×8172194³ (a number of 22 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8172194.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2043047 + ... + 2043050.

Almost surely, 2^8172194 is an apocalyptic number.

8172194 is a deficient number, since it is larger than the sum of its proper divisors (4086100).

8172194 is a wasteful number, since it uses less digits than its factorization.

8172194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4086099.

The product of its digits is 4032, while the sum is 32.

The square root of 8172194 is about 2858.7049515471. The cubic root of 8172194 is about 201.4247759649.

The spelling of 8172194 in words is "eight million, one hundred seventy-two thousand, one hundred ninety-four".