3913221984 has 48 divisors (see below), whose sum is σ = 11739667968. Its totient is φ = 1118063232.

The previous prime is 3913221967. The next prime is 3913222051. The reversal of 3913221984 is 4891223193.

3913221984 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-3 number, since 3×3913221984³ (a number of 30 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2910952 + ... + 2912295.

It is an arithmetic number, because the mean of its divisors is an integer number (244576416).

Almost surely, 2^3913221984 is an apocalyptic number.

It is an amenable number.

3913221984 is an abundant number, since it is smaller than the sum of its proper divisors (7826445984).

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

3913221984 is a wasteful number, since it uses less digits than its factorization.

3913221984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5823267 (or 5823259 counting only the distinct ones).

The product of its digits is 93312, while the sum is 42.

The square root of 3913221984 is about 62555.7510066021. The cubic root of 3913221984 is about 1575.8377314099.

It can be divided in two parts, 39132 and 21984, that added together give a palindrome (61116).

The spelling of 3913221984 in words is "three billion, nine hundred thirteen million, two hundred twenty-one thousand, nine hundred eighty-four".