3929925619216 has 45 divisors (see below), whose sum is σ = 8088751100071. Its totient is φ = 1849313325056.

The previous prime is 3929925619181. The next prime is 3929925619237. The reversal of 3929925619216 is 6129165299293.

The square root of 3929925619216 is 1982404.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 502391769616 + 3427533849600 = 708796^2 + 1851360^2 .

It is a super-2 number, since 2×3929925619216² (a number of 26 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 134788896 + ... + 134818048.

Almost surely, 2^{3929925619216} is an apocalyptic number.

3929925619216 is the 1982404-th square number.

It is an amenable number.

3929925619216 is an abundant number, since it is smaller than the sum of its proper divisors (4158825480855).

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

3929925619216 is an frugal number, since it uses more digits than its factorization.

3929925619216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58348 (or 29172 counting only the distinct ones).

The product of its digits is 28343520, while the sum is 64.

Multiplying 3929925619216 by its sum of digits (64), we get a square (251515239629824 = 15859232²).

The spelling of 3929925619216 in words is "three trillion, nine hundred twenty-nine billion, nine hundred twenty-five million, six hundred nineteen thousand, two hundred sixteen".