3986912164 has 27 divisors (see below), whose sum is σ = 7060057473. Its totient is φ = 1970030400.

The previous prime is 3986912147. The next prime is 3986912179. The reversal of 3986912164 is 4612196893.

It is a happy number.

The square root of 3986912164 is 63142.

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

It can be written as a sum of positive squares in only one way, i.e., 2998438564 + 988473600 = 54758^2 + 31440^2 .

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, 16543084 + ... + 16543324.

Almost surely, 2^3986912164 is an apocalyptic number.

3986912164 is the 63142-nd square number.

It is an amenable number.

3986912164 is a deficient number, since it is larger than the sum of its proper divisors (3073145309).

3986912164 is an equidigital number, since it uses as much as digits as its factorization.

3986912164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748 (or 374 counting only the distinct ones).

The product of its digits is 559872, while the sum is 49.

The cubic root of 3986912164 is about 1585.6678565572.

Multiplying 3986912164 by its sum of digits (49), we get a square (195358696036 = 441994²).

The spelling of 3986912164 in words is "three billion, nine hundred eighty-six million, nine hundred twelve thousand, one hundred sixty-four".