6444294552 has 80 divisors (see below), whose sum is σ = 18304347600. Its totient is φ = 2117828160.

The previous prime is 6444294547. The next prime is 6444294559. The reversal of 6444294552 is 2554924446.

It is a happy number.

6444294552 is a `hidden beast` number, since 6 + 4 + 4 + 4 + 2 + 94 + 552 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 6444294498 and 6444294507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6444294559) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 24027 + ... + 116042.

It is an arithmetic number, because the mean of its divisors is an integer number (228804345).

Almost surely, 2^6444294552 is an apocalyptic number.

It is an amenable number.

6444294552 is an abundant number, since it is smaller than the sum of its proper divisors (11860053048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6444294552 is a wasteful number, since it uses less digits than its factorization.

6444294552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140158 (or 140145 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 45.

The square root of 6444294552 is about 80276.3635947718. The cubic root of 6444294552 is about 1860.9089625950.

The spelling of 6444294552 in words is "six billion, four hundred forty-four million, two hundred ninety-four thousand, five hundred fifty-two".