168669444 has 24 divisors (see below), whose sum is σ = 416713248. Its totient is φ = 52915840.

The previous prime is 168669439. The next prime is 168669451. The reversal of 168669444 is 444966861.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 168669393 and 168669402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413202 + ... + 413609.

It is an arithmetic number, because the mean of its divisors is an integer number (17363052).

Almost surely, 2^168669444 is an apocalyptic number.

It is an amenable number.

168669444 is an abundant number, since it is smaller than the sum of its proper divisors (248043804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168669444 is a wasteful number, since it uses less digits than its factorization.

168669444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826835 (or 826833 counting only the distinct ones).

The product of its digits is 995328, while the sum is 48.

The square root of 168669444 is about 12987.2800847599. The cubic root of 168669444 is about 552.5167786992.

The spelling of 168669444 in words is "one hundred sixty-eight million, six hundred sixty-nine thousand, four hundred forty-four".