4047009 has 4 divisors (see below), whose sum is σ = 5396016. Its totient is φ = 2698004.

The previous prime is 4046993. The next prime is 4047013. The reversal of 4047009 is 9007404.

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.

It is a cyclic number.

It is not a de Polignac number, because 4047009 - 2⁴ = 4046993 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 4047009.

It is not an unprimeable number, because it can be changed into a prime (4047049) 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, 674499 + ... + 674504.

It is an arithmetic number, because the mean of its divisors is an integer number (1349004).

Almost surely, 2^4047009 is an apocalyptic number.

It is an amenable number.

4047009 is a deficient number, since it is larger than the sum of its proper divisors (1349007).

4047009 is a wasteful number, since it uses less digits than its factorization.

4047009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349006.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 4047009 is about 2011.7179225726. The cubic root of 4047009 is about 159.3595360621.

The spelling of 4047009 in words is "four million, forty-seven thousand, nine".