6447212229 has 4 divisors (see below), whose sum is σ = 8596282976. Its totient is φ = 4298141484.

The previous prime is 6447212207. The next prime is 6447212231. The reversal of 6447212229 is 9222127446.

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 not a de Polignac number, because 6447212229 - 2⁹ = 6447211717 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 (6447212729) 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, 1074535369 + ... + 1074535374.

It is an arithmetic number, because the mean of its divisors is an integer number (2149070744).

Almost surely, 2^6447212229 is an apocalyptic number.

It is an amenable number.

6447212229 is a deficient number, since it is larger than the sum of its proper divisors (2149070747).

6447212229 is a wasteful number, since it uses less digits than its factorization.

6447212229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149070746.

The product of its digits is 96768, while the sum is 39.

The square root of 6447212229 is about 80294.5342411300. The cubic root of 6447212229 is about 1861.1897645782.

The spelling of 6447212229 in words is "six billion, four hundred forty-seven million, two hundred twelve thousand, two hundred twenty-nine".