4428385847 has 4 divisors (see below), whose sum is σ = 4445224080. Its totient is φ = 4411547616.

The previous prime is 4428385813. The next prime is 4428385861. The reversal of 4428385847 is 7485838244.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4428385847 - 2¹⁰ = 4428384823 is a prime.

It is a super-2 number, since 2×4428385847² = 39221202419819814818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4428385877) 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, 8418722 + ... + 8419247.

It is an arithmetic number, because the mean of its divisors is an integer number (1111306020).

Almost surely, 2^4428385847 is an apocalyptic number.

4428385847 is a deficient number, since it is larger than the sum of its proper divisors (16838233).

4428385847 is a wasteful number, since it uses less digits than its factorization.

4428385847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16838232.

The product of its digits is 6881280, while the sum is 53.

The square root of 4428385847 is about 66546.1181963306. The cubic root of 4428385847 is about 1642.1587978054.

The spelling of 4428385847 in words is "four billion, four hundred twenty-eight million, three hundred eighty-five thousand, eight hundred forty-seven".