4387821344 has 24 divisors (see below), whose sum is σ = 8917187328. Its totient is φ = 2123138880.

The previous prime is 4387821337. The next prime is 4387821349. The reversal of 4387821344 is 4431287834.

It is a super-2 number, since 2×4387821344² = 38505952293723932672, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4387821295 and 4387821304.

It is not an unprimeable number, because it can be changed into a prime (4387821349) 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, 2210612 + ... + 2212595.

It is an arithmetic number, because the mean of its divisors is an integer number (371549472).

Almost surely, 2^4387821344 is an apocalyptic number.

It is an amenable number.

4387821344 is an abundant number, since it is smaller than the sum of its proper divisors (4529365984).

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

4387821344 is a wasteful number, since it uses less digits than its factorization.

4387821344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4423248 (or 4423240 counting only the distinct ones).

The product of its digits is 516096, while the sum is 44.

The square root of 4387821344 is about 66240.6321225877. The cubic root of 4387821344 is about 1637.1292908586.

The spelling of 4387821344 in words is "four billion, three hundred eighty-seven million, eight hundred twenty-one thousand, three hundred forty-four".