6438435 has 48 divisors (see below), whose sum is σ = 11521440. Its totient is φ = 3064320.

The previous prime is 6438431. The next prime is 6438437. The reversal of 6438435 is 5348346.

6438435 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 6438435 - 2² = 6438431 is a prime.

6438435 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6438396 and 6438405.

It is not an unprimeable number, because it can be changed into a prime (6438431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 157015 + ... + 157055.

It is an arithmetic number, because the mean of its divisors is an integer number (240030).

Almost surely, 2^6438435 is an apocalyptic number.

6438435 is a deficient number, since it is larger than the sum of its proper divisors (5083005).

6438435 is a wasteful number, since it uses less digits than its factorization.

6438435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 97 counting only the distinct ones).

The product of its digits is 34560, while the sum is 33.

The square root of 6438435 is about 2537.4071411581. The cubic root of 6438435 is about 186.0344773642.

The spelling of 6438435 in words is "six million, four hundred thirty-eight thousand, four hundred thirty-five".