3939787272 has 64 divisors (see below), whose sum is σ = 10245058560. Its totient is φ = 1261166400.

The previous prime is 3939787253. The next prime is 3939787273. The reversal of 3939787272 is 2727879393.

It is a super-2 number, since 2×3939787272² = 31043847497226403968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3939787273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77253 + ... + 117675.

It is an arithmetic number, because the mean of its divisors is an integer number (160079040).

Almost surely, 2^3939787272 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 3939787272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5122529280).

3939787272 is an abundant number, since it is smaller than the sum of its proper divisors (6305271288).

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

3939787272 is a wasteful number, since it uses less digits than its factorization.

3939787272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40594 (or 40590 counting only the distinct ones).

The product of its digits is 8001504, while the sum is 57.

The square root of 3939787272 is about 62767.7247636076. The cubic root of 3939787272 is about 1579.3956017615.

The spelling of 3939787272 in words is "three billion, nine hundred thirty-nine million, seven hundred eighty-seven thousand, two hundred seventy-two".