4421715990 has 64 divisors (see below), whose sum is σ = 10857411072. Its totient is φ = 1152166400.

The previous prime is 4421715979. The next prime is 4421716009. The reversal of 4421715990 is 995171244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231505 + ... + 249875.

It is an arithmetic number, because the mean of its divisors is an integer number (169647048).

Almost surely, 2^4421715990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4421715990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5428705536).

4421715990 is an abundant number, since it is smaller than the sum of its proper divisors (6435695082).

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

4421715990 is a wasteful number, since it uses less digits than its factorization.

4421715990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18565.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 4421715990 is about 66495.9847659992. The cubic root of 4421715990 is about 1641.3339323195. Note that the first 3 decimals are identical.

The spelling of 4421715990 in words is "four billion, four hundred twenty-one million, seven hundred fifteen thousand, nine hundred ninety".