4427898644 has 12 divisors (see below), whose sum is σ = 8344886004. Its totient is φ = 2043645504.

The previous prime is 4427898637. The next prime is 4427898667. The reversal of 4427898644 is 4468987244.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 220819600 + 4207079044 = 14860^2 + 64862^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4427898644.

It is a congruent number.

It is an unprimeable number.

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, 42575897 + ... + 42576000.

It is an arithmetic number, because the mean of its divisors is an integer number (695407167).

Almost surely, 2^4427898644 is an apocalyptic number.

It is an amenable number.

4427898644 is a deficient number, since it is larger than the sum of its proper divisors (3916987360).

4427898644 is a wasteful number, since it uses less digits than its factorization.

4427898644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85151914 (or 85151912 counting only the distinct ones).

The product of its digits is 12386304, while the sum is 56.

The square root of 4427898644 is about 66542.4574538693. The cubic root of 4427898644 is about 1642.0985731499.

The spelling of 4427898644 in words is "four billion, four hundred twenty-seven million, eight hundred ninety-eight thousand, six hundred forty-four".