4321909 has 4 divisors (see below), whose sum is σ = 4328640. Its totient is φ = 4315180.

The previous prime is 4321901. The next prime is 4321931. The reversal of 4321909 is 9091234.

It is a happy number.

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 4321909 - 2³ = 4321901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4321901) 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, 2287 + ... + 3724.

It is an arithmetic number, because the mean of its divisors is an integer number (1082160).

Almost surely, 2^4321909 is an apocalyptic number.

It is an amenable number.

4321909 is a deficient number, since it is larger than the sum of its proper divisors (6731).

4321909 is an equidigital number, since it uses as much as digits as its factorization.

4321909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6730.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 4321909 is about 2078.9201523868. The cubic root of 4321909 is about 162.8890433852.

It can be divided in two parts, 43 and 21909, that added together give a cube (21952 = 28³).

The spelling of 4321909 in words is "four million, three hundred twenty-one thousand, nine hundred nine".