4030009 has 4 divisors (see below), whose sum is σ = 4075380. Its totient is φ = 3984640.

The previous prime is 4030007. The next prime is 4030051. The reversal of 4030009 is 9000304.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2166784 + 1863225 = 1472^2 + 1365^2 .

It is a cyclic number.

It is not a de Polignac number, because 4030009 - 2¹ = 4030007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4029974 and 4030001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4030007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22552 + ... + 22729.

It is an arithmetic number, because the mean of its divisors is an integer number (1018845).

Almost surely, 2^4030009 is an apocalyptic number.

It is an amenable number.

4030009 is a deficient number, since it is larger than the sum of its proper divisors (45371).

4030009 is an equidigital number, since it uses as much as digits as its factorization.

4030009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45370.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 4030009 is about 2007.4882315969. The cubic root of 4030009 is about 159.1360859109.

The spelling of 4030009 in words is "four million, thirty thousand, nine".