3921055980 has 48 divisors (see below), whose sum is σ = 11117944320. Its totient is φ = 1032378048.

The previous prime is 3921055961. The next prime is 3921055991. The reversal of 3921055980 is 895501293.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 408874 + ... + 418353.

It is an arithmetic number, because the mean of its divisors is an integer number (231623840).

Almost surely, 2^3921055980 is an apocalyptic number.

3921055980 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3921055980 is an abundant number, since it is smaller than the sum of its proper divisors (7196888340).

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

3921055980 is a wasteful number, since it uses less digits than its factorization.

3921055980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827318 (or 827316 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 42.

The square root of 3921055980 is about 62618.3358130827. The cubic root of 3921055980 is about 1576.8886026759. Note that the first 3 decimals are identical.

The spelling of 3921055980 in words is "three billion, nine hundred twenty-one million, fifty-five thousand, nine hundred eighty".