6438350447 has 2 divisors, whose sum is σ = 6438350448. Its totient is φ = 6438350446.

The previous prime is 6438350441. The next prime is 6438350467. The reversal of 6438350447 is 7440538346.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6438350447 - 2¹⁸ = 6438088303 is a prime.

It is a super-4 number, since 4×6438350447⁴ (a number of 40 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6438350398 and 6438350407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6438350441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3219175223 + 3219175224.

It is an arithmetic number, because the mean of its divisors is an integer number (3219175224).

Almost surely, 2^6438350447 is an apocalyptic number.

6438350447 is a deficient number, since it is larger than the sum of its proper divisors (1).

6438350447 is an equidigital number, since it uses as much as digits as its factorization.

6438350447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 44.

The square root of 6438350447 is about 80239.3322940813. The cubic root of 6438350447 is about 1860.3366299223.

The spelling of 6438350447 in words is "six billion, four hundred thirty-eight million, three hundred fifty thousand, four hundred forty-seven".