3930805272 has 32 divisors (see below), whose sum is σ = 10344225600. Its totient is φ = 1241306784.

The previous prime is 3930805237. The next prime is 3930805279. The reversal of 3930805272 is 2725080393.

It is a self number, because there is not a number n which added to its sum of digits gives 3930805272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3930805279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4309638 + ... + 4310549.

It is an arithmetic number, because the mean of its divisors is an integer number (323257050).

Almost surely, 2^3930805272 is an apocalyptic number.

It is an amenable number.

3930805272 is an abundant number, since it is smaller than the sum of its proper divisors (6413420328).

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

3930805272 is a wasteful number, since it uses less digits than its factorization.

3930805272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8620215 (or 8620211 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 3930805272 is about 62696.1344262946. The cubic root of 3930805272 is about 1578.1944433747.

The spelling of 3930805272 in words is "three billion, nine hundred thirty million, eight hundred five thousand, two hundred seventy-two".