3945792729222 has 96 divisors (see below), whose sum is σ = 9214532421120. Its totient is φ = 1216562094720.

The previous prime is 3945792729181. The next prime is 3945792729251. The reversal of 3945792729222 is 2229272975493.

3945792729222 is a `hidden beast` number, since 3 + 9 + 457 + 9 + 2 + 72 + 92 + 22 = 666.

3945792729222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 3945792729222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1712218 + ... + 3289874.

It is an arithmetic number, because the mean of its divisors is an integer number (95984712720).

Almost surely, 2^{3945792729222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3945792729222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4607266210560).

3945792729222 is an abundant number, since it is smaller than the sum of its proper divisors (5268739691898).

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

3945792729222 is a wasteful number, since it uses less digits than its factorization.

3945792729222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577858 (or 1577855 counting only the distinct ones).

The product of its digits is 68584320, while the sum is 63.

The spelling of 3945792729222 in words is "three trillion, nine hundred forty-five billion, seven hundred ninety-two million, seven hundred twenty-nine thousand, two hundred twenty-two".