3839985000 has 120 divisors (see below), whose sum is σ = 12995941530. Its totient is φ = 1023984000.

The previous prime is 3839984963. The next prime is 3839985029. The reversal of 3839985000 is 5899383.

It can be written as a sum of positive squares in 5 ways, for example, as 695556 + 3839289444 = 834^2 + 61962^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 2334 + ... + 87666.

Almost surely, 2^3839985000 is an apocalyptic number.

3839985000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3839985000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6497970765).

3839985000 is an abundant number, since it is smaller than the sum of its proper divisors (9155956530).

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

3839985000 is a wasteful number, since it uses less digits than its factorization.

3839985000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85365 (or 85343 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 3839985000 is about 61967.6125084709. The cubic root of 3839985000 is about 1565.9450174713.

The spelling of 3839985000 in words is "three billion, eight hundred thirty-nine million, nine hundred eighty-five thousand".