3971777226 has 24 divisors (see below), whose sum is σ = 8201572992. Its totient is φ = 1280941200.

The previous prime is 3971777209. The next prime is 3971777231. The reversal of 3971777226 is 6227771793.

It is a happy number.

3971777226 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 857196 + ... + 861816.

It is an arithmetic number, because the mean of its divisors is an integer number (341732208).

Almost surely, 2^3971777226 is an apocalyptic number.

3971777226 is an abundant number, since it is smaller than the sum of its proper divisors (4229795766).

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

3971777226 is an frugal number, since it uses more digits than its factorization.

3971777226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9278 (or 4657 counting only the distinct ones).

The product of its digits is 1555848, while the sum is 51.

The square root of 3971777226 is about 63022.0376217716. The cubic root of 3971777226 is about 1583.6588317049.

The spelling of 3971777226 in words is "three billion, nine hundred seventy-one million, seven hundred seventy-seven thousand, two hundred twenty-six".