4391129648 has 80 divisors (see below), whose sum is σ = 9130558464. Its totient is φ = 2038579200.

The previous prime is 4391129593. The next prime is 4391129669. The reversal of 4391129648 is 8469211934.

Its product of digits (373248) is a multiple of the sum of its prime divisors (864).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10950248 + ... + 10950648.

Almost surely, 2^4391129648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4391129648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4565279232).

4391129648 is an abundant number, since it is smaller than the sum of its proper divisors (4739428816).

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

4391129648 is a wasteful number, since it uses less digits than its factorization.

4391129648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870 (or 864 counting only the distinct ones).

The product of its digits is 373248, while the sum is 47.

The square root of 4391129648 is about 66265.5992804713. The cubic root of 4391129648 is about 1637.5406385657.

The spelling of 4391129648 in words is "four billion, three hundred ninety-one million, one hundred twenty-nine thousand, six hundred forty-eight".