3800009 has 4 divisors (see below), whose sum is σ = 3807504. Its totient is φ = 3792516.

The previous prime is 3799973. The next prime is 3800021. The reversal of 3800009 is 9000083.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9000083 = 2689 ⋅3347.

It is a cyclic number.

It is not a de Polignac number, because 3800009 - 2¹⁶ = 3734473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3800059) 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, 2927 + ... + 4020.

It is an arithmetic number, because the mean of its divisors is an integer number (951876).

Almost surely, 2^3800009 is an apocalyptic number.

It is an amenable number.

3800009 is a deficient number, since it is larger than the sum of its proper divisors (7495).

3800009 is an equidigital number, since it uses as much as digits as its factorization.

3800009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7494.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 3800009 is about 1949.3611774117. The cubic root of 3800009 is about 156.0491982673.

The spelling of 3800009 in words is "three million, eight hundred thousand, nine".