3984938650420 has 576 divisors, whose sum is σ = 11366284608000. Its totient is φ = 1165262837760.

The previous prime is 3984938650373. The next prime is 3984938650421. The reversal of 3984938650420 is 240568394893.

It is a super-2 number, since 2×3984938650420² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3984938650421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1319951671 + ... + 1319954689.

It is an arithmetic number, because the mean of its divisors is an integer number (19733133000).

Almost surely, 2^{3984938650420} 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 3984938650420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5683142304000).

3984938650420 is an abundant number, since it is smaller than the sum of its proper divisors (7381345957580).

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

3984938650420 is a wasteful number, since it uses less digits than its factorization.

3984938650420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3141 (or 3106 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 61.

The spelling of 3984938650420 in words is "three trillion, nine hundred eighty-four billion, nine hundred thirty-eight million, six hundred fifty thousand, four hundred twenty".