6430406441 has 4 divisors (see below), whose sum is σ = 6436780500. Its totient is φ = 6424032384.

The previous prime is 6430406393. The next prime is 6430406449. The reversal of 6430406441 is 1446040346.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2828006041 + 3602400400 = 53179^2 + 60020^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6430406441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6430406398 and 6430406407.

It is not an unprimeable number, because it can be changed into a prime (6430406449) 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, 3185516 + ... + 3187533.

It is an arithmetic number, because the mean of its divisors is an integer number (1609195125).

Almost surely, 2^6430406441 is an apocalyptic number.

It is an amenable number.

6430406441 is a deficient number, since it is larger than the sum of its proper divisors (6374059).

6430406441 is a wasteful number, since it uses less digits than its factorization.

6430406441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6374058.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 6430406441 is about 80189.8150702444. The cubic root of 6430406441 is about 1859.5711850133.

Adding to 6430406441 its reverse (1446040346), we get a palindrome (7876446787).

The spelling of 6430406441 in words is "six billion, four hundred thirty million, four hundred six thousand, four hundred forty-one".