3929231071872 has 256 divisors, whose sum is σ = 11907933206400. Its totient is φ = 1274744217600.

The previous prime is 3929231071861. The next prime is 3929231071889. The reversal of 3929231071872 is 2781701329293.

It is a happy number.

3929231071872 is a `hidden beast` number, since 39 + 292 + 310 + 7 + 1 + 8 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 59621083 + ... + 59686949.

Almost surely, 2^{3929231071872} is an apocalyptic number.

3929231071872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3929231071872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5953966603200).

3929231071872 is an abundant number, since it is smaller than the sum of its proper divisors (7978702134528).

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

3929231071872 is a wasteful number, since it uses less digits than its factorization.

3929231071872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66352 (or 66334 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 3929231071872 in words is "three trillion, nine hundred twenty-nine billion, two hundred thirty-one million, seventy-one thousand, eight hundred seventy-two".