3963556580 has 12 divisors (see below), whose sum is σ = 8323468860. Its totient is φ = 1585422624.

The previous prime is 3963556549. The next prime is 3963556601. The reversal of 3963556580 is 856553693.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1462756516 + 2500800064 = 38246^2 + 50008^2 .

It is a super-2 number, since 2×3963556580² = 31419561525722592800, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 99088895 + ... + 99088934.

It is an arithmetic number, because the mean of its divisors is an integer number (693622405).

Almost surely, 2^3963556580 is an apocalyptic number.

It is an amenable number.

3963556580 is an abundant number, since it is smaller than the sum of its proper divisors (4359912280).

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

3963556580 is a wasteful number, since it uses less digits than its factorization.

3963556580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198177838 (or 198177836 counting only the distinct ones).

The product of its (nonzero) digits is 2916000, while the sum is 50.

The square root of 3963556580 is about 62956.7834311760. The cubic root of 3963556580 is about 1582.5654764197.

The spelling of 3963556580 in words is "three billion, nine hundred sixty-three million, five hundred fifty-six thousand, five hundred eighty".