4405998 has 16 divisors (see below), whose sum is σ = 8894160. Its totient is φ = 1454976.

The previous prime is 4405991. The next prime is 4406021. The reversal of 4405998 is 8995044.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4405991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2715 + ... + 4022.

It is an arithmetic number, because the mean of its divisors is an integer number (555885).

Almost surely, 2^4405998 is an apocalyptic number.

4405998 is an abundant number, since it is smaller than the sum of its proper divisors (4488162).

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

4405998 is a wasteful number, since it uses less digits than its factorization.

4405998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6851.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 4405998 is about 2099.0469265836. The cubic root of 4405998 is about 163.9386792360.

The spelling of 4405998 in words is "four million, four hundred five thousand, nine hundred ninety-eight".