3986691922 has 4 divisors (see below), whose sum is σ = 5980037886. Its totient is φ = 1993345960.

The previous prime is 3986691889. The next prime is 3986691923. The reversal of 3986691922 is 2291966893.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2291966893 = 89 ⋅25752437.

It can be written as a sum of positive squares in only one way, i.e., 3877677441 + 109014481 = 62271^2 + 10441^2 .

It is not an unprimeable number, because it can be changed into a prime (3986691923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996672979 + ... + 996672982.

Almost surely, 2^3986691922 is an apocalyptic number.

3986691922 is a deficient number, since it is larger than the sum of its proper divisors (1993345964).

3986691922 is a wasteful number, since it uses less digits than its factorization.

3986691922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993345963.

The product of its digits is 2519424, while the sum is 55.

The square root of 3986691922 is about 63140.2559545018. The cubic root of 3986691922 is about 1585.6386579296.

The spelling of 3986691922 in words is "three billion, nine hundred eighty-six million, six hundred ninety-one thousand, nine hundred twenty-two".