3949647072 has 96 divisors (see below), whose sum is σ = 12015972864. Its totient is φ = 1112563200.

The previous prime is 3949647049. The next prime is 3949647109. The reversal of 3949647072 is 2707469493.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6322 + ... + 89102.

It is an arithmetic number, because the mean of its divisors is an integer number (125166384).

Almost surely, 2^3949647072 is an apocalyptic number.

3949647072 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3949647072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6007986432).

3949647072 is an abundant number, since it is smaller than the sum of its proper divisors (8066325792).

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

3949647072 is a wasteful number, since it uses less digits than its factorization.

3949647072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82872 (or 82864 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 51.

The square root of 3949647072 is about 62846.2176427508. The cubic root of 3949647072 is about 1580.7120478024.

It can be divided in two parts, 39496 and 47072, that added together give a palindrome (86568).

The spelling of 3949647072 in words is "three billion, nine hundred forty-nine million, six hundred forty-seven thousand, seventy-two".