4401009 has 6 divisors (see below), whose sum is σ = 6357026. Its totient is φ = 2934000.

The previous prime is 4400993. The next prime is 4401043. The reversal of 4401009 is 9001044.

It can be written as a sum of positive squares in only one way, i.e., 4397409 + 3600 = 2097^2 + 60^2 .

It is not a de Polignac number, because 4401009 - 2⁴ = 4400993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4400982 and 4401000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4401209) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 244492 + ... + 244509.

Almost surely, 2^4401009 is an apocalyptic number.

It is an amenable number.

4401009 is a deficient number, since it is larger than the sum of its proper divisors (1956017).

4401009 is a wasteful number, since it uses less digits than its factorization.

4401009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489007 (or 489004 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 4401009 is about 2097.8581934916. The cubic root of 4401009 is about 163.8767788471.

The spelling of 4401009 in words is "four million, four hundred one thousand, nine".