39949615876 has 45 divisors (see below), whose sum is σ = 72851604441. Its totient is φ = 19168716096.

The previous prime is 39949615843. The next prime is 39949615891. The reversal of 39949615876 is 67851694993.

The square root of 39949615876 is 199874.

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

It can be written as a sum of positive squares in 7 ways, for example, as 1464592900 + 38485022976 = 38270^2 + 196176^2 .

It is a Duffinian number.

Its product of digits (88179840) is a multiple of the sum of its prime divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 547254976 + ... + 547255048.

Almost surely, 2^39949615876 is an apocalyptic number.

39949615876 is the 199874-th square number.

It is an amenable number.

39949615876 is a deficient number, since it is larger than the sum of its proper divisors (32901988565).

39949615876 is an frugal number, since it uses more digits than its factorization.

39949615876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 112 counting only the distinct ones).

The product of its digits is 88179840, while the sum is 67.

The spelling of 39949615876 in words is "thirty-nine billion, nine hundred forty-nine million, six hundred fifteen thousand, eight hundred seventy-six".