3953644272 has 120 divisors (see below), whose sum is σ = 11592988160. Its totient is φ = 1256238720.

The previous prime is 3953644237. The next prime is 3953644291. The reversal of 3953644272 is 2724463593.

3953644272 is a `hidden beast` number, since 3 + 9 + 536 + 4 + 42 + 72 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 292479 + ... + 305697.

Almost surely, 2^3953644272 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 3953644272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5796494080).

3953644272 is an abundant number, since it is smaller than the sum of its proper divisors (7639343888).

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

3953644272 is a wasteful number, since it uses less digits than its factorization.

3953644272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13331 (or 13322 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 45.

The square root of 3953644272 is about 62878.0110372458. The cubic root of 3953644272 is about 1581.2451158447.

The spelling of 3953644272 in words is "three billion, nine hundred fifty-three million, six hundred forty-four thousand, two hundred seventy-two".