4391121930 has 128 divisors (see below), whose sum is σ = 12091161600. Its totient is φ = 1017050112.

The previous prime is 4391121929. The next prime is 4391121941. The reversal of 4391121930 is 391211934.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 4391121891 and 4391121900.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1118511 + ... + 1122429.

It is an arithmetic number, because the mean of its divisors is an integer number (94462200).

Almost surely, 2^4391121930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4391121930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6045580800).

4391121930 is an abundant number, since it is smaller than the sum of its proper divisors (7700039670).

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

4391121930 is a wasteful number, since it uses less digits than its factorization.

4391121930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3985 (or 3959 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 4391121930 is about 66265.5410451013. The cubic root of 4391121930 is about 1637.5396791659.

The spelling of 4391121930 in words is "four billion, three hundred ninety-one million, one hundred twenty-one thousand, nine hundred thirty".