4216470721 has 6 divisors (see below), whose sum is σ = 4308093890. Its totient is φ = 4126756416.

The previous prime is 4216470719. The next prime is 4216470779. The reversal of 4216470721 is 1270746124.

It is a happy number.

4216470721 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3523728321 + 692742400 = 59361^2 + 26320^2 .

It is not a de Polignac number, because 4216470721 - 2¹ = 4216470719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4216470821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 952176 + ... + 956593.

Almost surely, 2^4216470721 is an apocalyptic number.

It is an amenable number.

4216470721 is a deficient number, since it is larger than the sum of its proper divisors (91623169).

4216470721 is an equidigital number, since it uses as much as digits as its factorization.

4216470721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908863 (or 1908816 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 4216470721 is about 64934.3570153736. The cubic root of 4216470721 is about 1615.5349690878.

The spelling of 4216470721 in words is "four billion, two hundred sixteen million, four hundred seventy thousand, seven hundred twenty-one".