3939674686 has 4 divisors (see below), whose sum is σ = 5909512032. Its totient is φ = 1969837342.

The previous prime is 3939674671. The next prime is 3939674689. The reversal of 3939674686 is 6864769393.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6864769393 = 179 ⋅38350667.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3939674689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 984918670 + ... + 984918673.

It is an arithmetic number, because the mean of its divisors is an integer number (1477378008).

Almost surely, 2^3939674686 is an apocalyptic number.

3939674686 is a deficient number, since it is larger than the sum of its proper divisors (1969837346).

3939674686 is a wasteful number, since it uses less digits than its factorization.

3939674686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969837345.

The product of its digits is 35271936, while the sum is 61.

The square root of 3939674686 is about 62766.8279109276. The cubic root of 3939674686 is about 1579.3805569959.

The spelling of 3939674686 in words is "three billion, nine hundred thirty-nine million, six hundred seventy-four thousand, six hundred eighty-six".