4050009 has 6 divisors (see below), whose sum is σ = 5850026. Its totient is φ = 2700000.

The previous prime is 4049989. The next prime is 4050019. The reversal of 4050009 is 9000504.

It can be written as a sum of positive squares in only one way, i.e., 3686400 + 363609 = 1920^2 + 603^2 .

It is not a de Polignac number, because 4050009 - 2⁵ = 4049977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4049973 and 4050000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4050019) 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 5 ways as a sum of consecutive naturals, for example, 224992 + ... + 225009.

Almost surely, 2^4050009 is an apocalyptic number.

It is an amenable number.

4050009 is a deficient number, since it is larger than the sum of its proper divisors (1800017).

4050009 is a wasteful number, since it uses less digits than its factorization.

4050009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450007 (or 450004 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 4050009 is about 2012.4634158165. The cubic root of 4050009 is about 159.3989034505.

The spelling of 4050009 in words is "four million, fifty thousand, nine".