3949961441272 has 144 divisors (see below), whose sum is σ = 9883097819280. Its totient is φ = 1448419061760.

The previous prime is 3949961441233. The next prime is 3949961441281. The reversal of 3949961441272 is 2721441699493.

It is a self number, because there is not a number n which added to its sum of digits gives 3949961441272.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 949728 + ... + 2966800.

It is an arithmetic number, because the mean of its divisors is an integer number (68632623745).

Almost surely, 2^{3949961441272} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3949961441272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4941548909640).

3949961441272 is an abundant number, since it is smaller than the sum of its proper divisors (5933136378008).

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

3949961441272 is a wasteful number, since it uses less digits than its factorization.

3949961441272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2017142 (or 2017110 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 61.

The spelling of 3949961441272 in words is "three trillion, nine hundred forty-nine billion, nine hundred sixty-one million, four hundred forty-one thousand, two hundred seventy-two".