3889435872 has 48 divisors (see below), whose sum is σ = 11668309632. Its totient is φ = 1111267200.

The previous prime is 3889435853. The next prime is 3889435873. The reversal of 3889435872 is 2785349883.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×3889435872² = 30255422804800800768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3889435873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2893254 + ... + 2894597.

It is an arithmetic number, because the mean of its divisors is an integer number (243089784).

Almost surely, 2^3889435872 is an apocalyptic number.

3889435872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3889435872 is an abundant number, since it is smaller than the sum of its proper divisors (7778873760).

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

3889435872 is a wasteful number, since it uses less digits than its factorization.

3889435872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5787871 (or 5787863 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 57.

The square root of 3889435872 is about 62365.3419135981. The cubic root of 3889435872 is about 1572.6383851899.

The spelling of 3889435872 in words is "three billion, eight hundred eighty-nine million, four hundred thirty-five thousand, eight hundred seventy-two".