4869447840 has 144 divisors (see below), whose sum is σ = 17232572448. Its totient is φ = 1298509056.

The previous prime is 4869447811. The next prime is 4869447841. The reversal of 4869447840 is 487449684.

4869447840 is a `hidden beast` number, since 4 + 86 + 94 + 478 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (4869447841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23742 + ... + 101501.

It is an arithmetic number, because the mean of its divisors is an integer number (119670642).

Almost surely, 2^4869447840 is an apocalyptic number.

4869447840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4869447840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8616286224).

4869447840 is an abundant number, since it is smaller than the sum of its proper divisors (12363124608).

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

4869447840 is a wasteful number, since it uses less digits than its factorization.

4869447840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125273 (or 125253 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 54.

The square root of 4869447840 is about 69781.4290481357. The cubic root of 4869447840 is about 1694.9617659165.

The spelling of 4869447840 in words is "four billion, eight hundred sixty-nine million, four hundred forty-seven thousand, eight hundred forty".