3959939926 has 16 divisors (see below), whose sum is σ = 6023685888. Its totient is φ = 1952208000.

The previous prime is 3959939881. The next prime is 3959939947. The reversal of 3959939926 is 6299399593.

It is a super-2 number, since 2×3959939926² = 31362248435057770952, which contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 8011 + ... + 89353.

It is an arithmetic number, because the mean of its divisors is an integer number (376480368).

Almost surely, 2^3959939926 is an apocalyptic number.

3959939926 is a deficient number, since it is larger than the sum of its proper divisors (2063745962).

3959939926 is a wasteful number, since it uses less digits than its factorization.

3959939926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81687.

The product of its digits is 31886460, while the sum is 64.

The square root of 3959939926 is about 62928.0535691356. The cubic root of 3959939926 is about 1582.0839784343.

The spelling of 3959939926 in words is "three billion, nine hundred fifty-nine million, nine hundred thirty-nine thousand, nine hundred twenty-six".