3943429728 has 192 divisors, whose sum is σ = 12192768000. Its totient is φ = 1092708864.

The previous prime is 3943429631. The next prime is 3943429751. The reversal of 3943429728 is 8279243493.

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 31 ways as a sum of consecutive naturals, for example, 3131563 + ... + 3132821.

It is an arithmetic number, because the mean of its divisors is an integer number (63504000).

Almost surely, 2^3943429728 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 3943429728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6096384000).

3943429728 is an abundant number, since it is smaller than the sum of its proper divisors (8249338272).

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

3943429728 is a wasteful number, since it uses less digits than its factorization.

3943429728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1417 (or 1409 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 51.

The square root of 3943429728 is about 62796.7334182281. The cubic root of 3943429728 is about 1579.8821853080.

The spelling of 3943429728 in words is "three billion, nine hundred forty-three million, four hundred twenty-nine thousand, seven hundred twenty-eight".