3977889982 has 8 divisors (see below), whose sum is σ = 6509274552. Its totient is φ = 1808131800.

The previous prime is 3977889953. The next prime is 3977890001. The reversal of 3977889982 is 2899887793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90406569 + ... + 90406612.

It is an arithmetic number, because the mean of its divisors is an integer number (813659319).

Almost surely, 2^3977889982 is an apocalyptic number.

3977889982 is a deficient number, since it is larger than the sum of its proper divisors (2531384570).

3977889982 is a wasteful number, since it uses less digits than its factorization.

3977889982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180813194.

The product of its digits is 109734912, while the sum is 70.

The square root of 3977889982 is about 63070.5159484208. The cubic root of 3977889982 is about 1584.4708576113.

The spelling of 3977889982 in words is "three billion, nine hundred seventy-seven million, eight hundred eighty-nine thousand, nine hundred eighty-two".