4427043821 has 8 divisors (see below), whose sum is σ = 4576809984. Its totient is φ = 4278862800.

The previous prime is 4427043809. The next prime is 4427043823. The reversal of 4427043821 is 1283407244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4427043821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4427043823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390605 + ... + 401778.

It is an arithmetic number, because the mean of its divisors is an integer number (572101248).

Almost surely, 2^4427043821 is an apocalyptic number.

It is an amenable number.

4427043821 is a deficient number, since it is larger than the sum of its proper divisors (149766163).

4427043821 is a wasteful number, since it uses less digits than its factorization.

4427043821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792571.

The product of its (nonzero) digits is 43008, while the sum is 35.

The square root of 4427043821 is about 66536.0340041394. The cubic root of 4427043821 is about 1641.9928951838.

The spelling of 4427043821 in words is "four billion, four hundred twenty-seven million, forty-three thousand, eight hundred twenty-one".