3985843452 has 48 divisors (see below), whose sum is σ = 9345611520. Its totient is φ = 1322159872.

The previous prime is 3985843451. The next prime is 3985843481. The reversal of 3985843452 is 2543485893.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3985843395 and 3985843404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3985843451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4079188 + ... + 4080164.

It is an arithmetic number, because the mean of its divisors is an integer number (194700240).

Almost surely, 2^3985843452 is an apocalyptic number.

It is an amenable number.

3985843452 is an abundant number, since it is smaller than the sum of its proper divisors (5359768068).

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

3985843452 is a wasteful number, since it uses less digits than its factorization.

3985843452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2290 (or 2288 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 51.

The square root of 3985843452 is about 63133.5366663392. The cubic root of 3985843452 is about 1585.5261617956.

The spelling of 3985843452 in words is "three billion, nine hundred eighty-five million, eight hundred forty-three thousand, four hundred fifty-two".