3944777901 has 16 divisors (see below), whose sum is σ = 5288640000. Its totient is φ = 2615408640.

The previous prime is 3944777897. The next prime is 3944777917. The reversal of 3944777901 is 1097774493.

3944777901 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3944777901 - 2² = 3944777897 is a prime.

It is a super-2 number, since 2×3944777901² = 31122545376435931602, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3944777981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 833221 + ... + 837941.

It is an arithmetic number, because the mean of its divisors is an integer number (330540000).

Almost surely, 2^3944777901 is an apocalyptic number.

It is an amenable number.

3944777901 is a deficient number, since it is larger than the sum of its proper divisors (1343862099).

3944777901 is a wasteful number, since it uses less digits than its factorization.

3944777901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6196.

The product of its (nonzero) digits is 1333584, while the sum is 51.

The square root of 3944777901 is about 62807.4669207412. The cubic root of 3944777901 is about 1580.0622072661.

The spelling of 3944777901 in words is "three billion, nine hundred forty-four million, seven hundred seventy-seven thousand, nine hundred one".