4421715991 has 16 divisors (see below), whose sum is σ = 5519259648. Its totient is φ = 3441448800.

The previous prime is 4421715979. The next prime is 4421716009. The reversal of 4421715991 is 1995171244.

It is a cyclic number.

It is not a de Polignac number, because 4421715991 - 2¹⁵ = 4421683223 is a prime.

It is a super-2 number, since 2×4421715991² = 39103144610130224162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4421715911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33181 + ... + 99721.

It is an arithmetic number, because the mean of its divisors is an integer number (344953728).

Almost surely, 2^4421715991 is an apocalyptic number.

4421715991 is a deficient number, since it is larger than the sum of its proper divisors (1097543657).

4421715991 is a wasteful number, since it uses less digits than its factorization.

4421715991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67422.

The product of its digits is 90720, while the sum is 43.

The square root of 4421715991 is about 66495.9847735185. The cubic root of 4421715991 is about 1641.3339324432. Note that the first 3 decimals are identical.

The spelling of 4421715991 in words is "four billion, four hundred twenty-one million, seven hundred fifteen thousand, nine hundred ninety-one".