3977218911 has 8 divisors (see below), whose sum is σ = 5446281904. Its totient is φ = 2579817600.

The previous prime is 3977218859. The next prime is 3977218937. The reversal of 3977218911 is 1198127793.

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

It is not a de Polignac number, because 3977218911 - 2¹³ = 3977210719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3977218961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17915290 + ... + 17915511.

It is an arithmetic number, because the mean of its divisors is an integer number (680785238).

Almost surely, 2^3977218911 is an apocalyptic number.

3977218911 is a deficient number, since it is larger than the sum of its proper divisors (1469062993).

3977218911 is a wasteful number, since it uses less digits than its factorization.

3977218911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35830841.

The product of its digits is 190512, while the sum is 48.

The square root of 3977218911 is about 63065.1957183992. The cubic root of 3977218911 is about 1584.3817523951.

The spelling of 3977218911 in words is "three billion, nine hundred seventy-seven million, two hundred eighteen thousand, nine hundred eleven".