4405988 has 24 divisors (see below), whose sum is σ = 7956480. Its totient is φ = 2134080.

The previous prime is 4405979. The next prime is 4405991. The reversal of 4405988 is 8895044.

It is a super-2 number, since 2×4405988² = 38825460512288, which contains 22 as substring.

It is an Ulam number.

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 in 7 ways as a sum of consecutive naturals, for example, 22973 + ... + 23163.

It is an arithmetic number, because the mean of its divisors is an integer number (331520).

Almost surely, 2^4405988 is an apocalyptic number.

It is an amenable number.

4405988 is a deficient number, since it is larger than the sum of its proper divisors (3550492).

4405988 is a wasteful number, since it uses less digits than its factorization.

4405988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 4405988 is about 2099.0445445488. The cubic root of 4405988 is about 163.9385552090.

The spelling of 4405988 in words is "four million, four hundred five thousand, nine hundred eighty-eight".