3938969782 has 16 divisors (see below), whose sum is σ = 6477984000. Its totient is φ = 1781441640.

The previous prime is 3938969779. The next prime is 3938969809. The reversal of 3938969782 is 2879698393.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 445482 + ... + 454237.

It is an arithmetic number, because the mean of its divisors is an integer number (404874000).

Almost surely, 2^3938969782 is an apocalyptic number.

3938969782 is a deficient number, since it is larger than the sum of its proper divisors (2539014218).

3938969782 is a wasteful number, since it uses less digits than its factorization.

3938969782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899931.

The product of its digits is 35271936, while the sum is 64.

The square root of 3938969782 is about 62761.2124006540. The cubic root of 3938969782 is about 1579.2863547951.

The spelling of 3938969782 in words is "three billion, nine hundred thirty-eight million, nine hundred sixty-nine thousand, seven hundred eighty-two".