4221134440 has 32 divisors (see below), whose sum is σ = 9825057000. Its totient is φ = 1630230784.

The previous prime is 4221134417. The next prime is 4221134443. The reversal of 4221134440 is 444311224.

It can be written as a sum of positive squares in 4 ways, for example, as 3698829124 + 522305316 = 60818^2 + 22854^2 .

It is a super-2 number, since 2×4221134440² = 35635951921108227200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4221134443) 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, 1818295 + ... + 1820614.

Almost surely, 2^4221134440 is an apocalyptic number.

4221134440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4221134440 is an abundant number, since it is smaller than the sum of its proper divisors (5603922560).

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

4221134440 is a wasteful number, since it uses less digits than its factorization.

4221134440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3638949 (or 3638945 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 4221134440 is about 64970.2581186192. The cubic root of 4221134440 is about 1616.1303821296.

Adding to 4221134440 its reverse (444311224), we get a palindrome (4665445664).

The spelling of 4221134440 in words is "four billion, two hundred twenty-one million, one hundred thirty-four thousand, four hundred forty".