4221360784 has 45 divisors (see below), whose sum is σ = 8425103337. Its totient is φ = 2048956992.

The previous prime is 4221360769. The next prime is 4221360823. The reversal of 4221360784 is 4870631224.

The square root of 4221360784 is 64972.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3777331600 + 444029184 = 61460^2 + 21072^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9615637 + ... + 9616075.

Almost surely, 2^4221360784 is an apocalyptic number.

4221360784 is the 64972-nd square number.

It is an amenable number.

4221360784 is a deficient number, since it is larger than the sum of its proper divisors (4203742553).

4221360784 is an frugal number, since it uses more digits than its factorization.

4221360784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960 (or 478 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

The cubic root of 4221360784 is about 1616.1592681145.

The spelling of 4221360784 in words is "four billion, two hundred twenty-one million, three hundred sixty thousand, seven hundred eighty-four".