168984446 has 4 divisors (see below), whose sum is σ = 253476672. Its totient is φ = 84492222.

The previous prime is 168984443. The next prime is 168984463. The reversal of 168984446 is 644489861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 644489861 = 19 ⋅33920519.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 168984394 and 168984403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168984443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42246110 + ... + 42246113.

It is an arithmetic number, because the mean of its divisors is an integer number (63369168).

Almost surely, 2^168984446 is an apocalyptic number.

168984446 is a deficient number, since it is larger than the sum of its proper divisors (84492226).

168984446 is an equidigital number, since it uses as much as digits as its factorization.

168984446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84492225.

The product of its digits is 1327104, while the sum is 50.

The square root of 168984446 is about 12999.4017554655. The cubic root of 168984446 is about 552.8605193952.

The spelling of 168984446 in words is "one hundred sixty-eight million, nine hundred eighty-four thousand, four hundred forty-six".