168449904 has 60 divisors (see below), whose sum is σ = 538775536. Its totient is φ = 48128256.

The previous prime is 168449899. The next prime is 168449917. The reversal of 168449904 is 409944861.

168449904 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 168449904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82549 + ... + 84564.

Almost surely, 2^168449904 is an apocalyptic number.

168449904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

168449904 is an abundant number, since it is smaller than the sum of its proper divisors (370325632).

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

168449904 is a wasteful number, since it uses less digits than its factorization.

168449904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167134 (or 167125 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 168449904 is about 12978.8252164824. The cubic root of 168449904 is about 552.2769561670.

The spelling of 168449904 in words is "one hundred sixty-eight million, four hundred forty-nine thousand, nine hundred four".