3977808546 has 16 divisors (see below), whose sum is σ = 8423594784. Its totient is φ = 1247939904.

The previous prime is 3977808539. The next prime is 3977808589. The reversal of 3977808546 is 6458087793.

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, 19498960 + ... + 19499163.

It is an arithmetic number, because the mean of its divisors is an integer number (526474674).

Almost surely, 2^3977808546 is an apocalyptic number.

3977808546 is an abundant number, since it is smaller than the sum of its proper divisors (4445786238).

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

3977808546 is a wasteful number, since it uses less digits than its factorization.

3977808546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38998145.

The product of its (nonzero) digits is 10160640, while the sum is 57.

The square root of 3977808546 is about 63069.8703502711. The cubic root of 3977808546 is about 1584.4600450239.

The spelling of 3977808546 in words is "three billion, nine hundred seventy-seven million, eight hundred eight thousand, five hundred forty-six".