6434909 has 8 divisors (see below), whose sum is σ = 7099512. Its totient is φ = 5794560.

The previous prime is 6434899. The next prime is 6434921. The reversal of 6434909 is 9094346.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1006009 + 5428900 = 1003^2 + 2330^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6434909 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 (6434969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5504 + ... + 6569.

It is an arithmetic number, because the mean of its divisors is an integer number (887439).

Almost surely, 2^6434909 is an apocalyptic number.

It is an amenable number.

6434909 is a deficient number, since it is larger than the sum of its proper divisors (664603).

6434909 is a wasteful number, since it uses less digits than its factorization.

6434909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12127.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 6434909 is about 2536.7122422537. The cubic root of 6434909 is about 186.0005106549. Note that the first 3 decimals are identical.

The spelling of 6434909 in words is "six million, four hundred thirty-four thousand, nine hundred nine".