4309009 has 4 divisors (see below), whose sum is σ = 4318704. Its totient is φ = 4299316.

The previous prime is 4309003. The next prime is 4309013. The reversal of 4309009 is 9009034.

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 4309009 - 2³ = 4309001 is a prime.

It is a super-3 number, since 3×4309009³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4309001) 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, 4147 + ... + 5080.

It is an arithmetic number, because the mean of its divisors is an integer number (1079676).

Almost surely, 2^4309009 is an apocalyptic number.

It is an amenable number.

4309009 is a deficient number, since it is larger than the sum of its proper divisors (9695).

4309009 is an equidigital number, since it uses as much as digits as its factorization.

4309009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9694.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 4309009 is about 2075.8152615298. The cubic root of 4309009 is about 162.7268185636.

Adding to 4309009 its sum of digits (25), we get a palindrome (4309034).

The spelling of 4309009 in words is "four million, three hundred nine thousand, nine".