4224432421 has 8 divisors (see below), whose sum is σ = 4653215424. Its totient is φ = 3803106720.

The previous prime is 4224432419. The next prime is 4224432461. The reversal of 4224432421 is 1242344224.

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

It is a cyclic number.

It is not a de Polignac number, because 4224432421 - 2¹ = 4224432419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4224432421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4224432461) 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, 1863136 + ... + 1865401.

It is an arithmetic number, because the mean of its divisors is an integer number (581651928).

Almost surely, 2^4224432421 is an apocalyptic number.

It is an amenable number.

4224432421 is a deficient number, since it is larger than the sum of its proper divisors (428783003).

4224432421 is a wasteful number, since it uses less digits than its factorization.

4224432421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3728651.

The product of its digits is 12288, while the sum is 28.

The square root of 4224432421 is about 64995.6338610525. The cubic root of 4224432421 is about 1616.5511678897.

Adding to 4224432421 its reverse (1242344224), we get a palindrome (5466776645).

It can be divided in two parts, 4224 and 432421, that added together give a triangular number (436645 = T₉₃₄).

The spelling of 4224432421 in words is "four billion, two hundred twenty-four million, four hundred thirty-two thousand, four hundred twenty-one".