4430023521 has 16 divisors (see below), whose sum is σ = 7364195328. Its totient is φ = 2301310800.

The previous prime is 4430023517. The next prime is 4430023531. The reversal of 4430023521 is 1253200344.

It is not a de Polignac number, because 4430023521 - 2² = 4430023517 is a prime.

It is a super-2 number, since 2×4430023521² = 39250216793226474882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4430023491 and 4430023500.

It is not an unprimeable number, because it can be changed into a prime (4430023501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9588565 + ... + 9589026.

It is an arithmetic number, because the mean of its divisors is an integer number (460262208).

Almost surely, 2^4430023521 is an apocalyptic number.

It is an amenable number.

4430023521 is a deficient number, since it is larger than the sum of its proper divisors (2934171807).

4430023521 is a wasteful number, since it uses less digits than its factorization.

4430023521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19177612.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 4430023521 is about 66558.4218638032. The cubic root of 4430023521 is about 1642.3612033329.

Adding to 4430023521 its reverse (1253200344), we get a palindrome (5683223865).

The spelling of 4430023521 in words is "four billion, four hundred thirty million, twenty-three thousand, five hundred twenty-one".