8427219604 has 12 divisors (see below), whose sum is σ = 15146219284. Its totient is φ = 4099728384.

The previous prime is 8427219553. The next prime is 8427219607. The reversal of 8427219604 is 4069127248.

It can be written as a sum of positive squares in 2 ways, for example, as 6880370704 + 1546848900 = 82948^2 + 39330^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8427219607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28470189 + ... + 28470484.

Almost surely, 2^8427219604 is an apocalyptic number.

It is an amenable number.

8427219604 is a deficient number, since it is larger than the sum of its proper divisors (6718999680).

8427219604 is a wasteful number, since it uses less digits than its factorization.

8427219604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56940714 (or 56940712 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 8427219604 is about 91799.8889106082. Note that the first 3 decimals coincide. The cubic root of 8427219604 is about 2034.9860530650.

The spelling of 8427219604 in words is "eight billion, four hundred twenty-seven million, two hundred nineteen thousand, six hundred four".