168443404 has 6 divisors (see below), whose sum is σ = 294775964. Its totient is φ = 84221700.

The previous prime is 168443393. The next prime is 168443459. The reversal of 168443404 is 404344861.

It is a super-2 number, since 2×168443404² = 56746360702214432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 168443404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21055422 + ... + 21055429.

Almost surely, 2^168443404 is an apocalyptic number.

It is an amenable number.

168443404 is a deficient number, since it is larger than the sum of its proper divisors (126332560).

168443404 is a wasteful number, since it uses less digits than its factorization.

168443404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42110855 (or 42110853 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 168443404 is about 12978.5748061950. The cubic root of 168443404 is about 552.2698524796.

The spelling of 168443404 in words is "one hundred sixty-eight million, four hundred forty-three thousand, four hundred four".