4191989706 has 64 divisors (see below), whose sum is σ = 9734307840. Its totient is φ = 1334686320.

The previous prime is 4191989677. The next prime is 4191989731. The reversal of 4191989706 is 6079891914.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 1069891 + ... + 1073801.

It is an arithmetic number, because the mean of its divisors is an integer number (152098560).

Almost surely, 2^4191989706 is an apocalyptic number.

4191989706 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 4191989706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4867153920).

4191989706 is an abundant number, since it is smaller than the sum of its proper divisors (5542318134).

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

4191989706 is a wasteful number, since it uses less digits than its factorization.

4191989706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4808 (or 4802 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The square root of 4191989706 is about 64745.5767292253. The cubic root of 4191989706 is about 1612.4022759597.

The spelling of 4191989706 in words is "four billion, one hundred ninety-one million, nine hundred eighty-nine thousand, seven hundred six".