4221434868 has 72 divisors (see below), whose sum is σ = 11470132800. Its totient is φ = 1204866432.

The previous prime is 4221434831. The next prime is 4221434923. The reversal of 4221434868 is 8684341224.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 660673 + ... + 667031.

It is an arithmetic number, because the mean of its divisors is an integer number (159307400).

Almost surely, 2^4221434868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4221434868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5735066400).

4221434868 is an abundant number, since it is smaller than the sum of its proper divisors (7248697932).

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

4221434868 is a wasteful number, since it uses less digits than its factorization.

4221434868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7509 (or 7500 counting only the distinct ones).

The product of its digits is 294912, while the sum is 42.

The square root of 4221434868 is about 64972.5701200130. The cubic root of 4221434868 is about 1616.1687224784.

The spelling of 4221434868 in words is "four billion, two hundred twenty-one million, four hundred thirty-four thousand, eight hundred sixty-eight".