39921199212 has 48 divisors (see below), whose sum is σ = 103819847040. Its totient is φ = 11865123072.

The previous prime is 39921199211. The next prime is 39921199217. The reversal of 39921199212 is 21299112993.

39921199212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (39921199211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5145918 + ... + 5153669.

It is an arithmetic number, because the mean of its divisors is an integer number (2162913480).

Almost surely, 2^39921199212 is an apocalyptic number.

It is an amenable number.

39921199212 is an abundant number, since it is smaller than the sum of its proper divisors (63898647828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39921199212 is a wasteful number, since it uses less digits than its factorization.

39921199212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10299630 (or 10299628 counting only the distinct ones).

The product of its digits is 157464, while the sum is 48.

The spelling of 39921199212 in words is "thirty-nine billion, nine hundred twenty-one million, one hundred ninety-nine thousand, two hundred twelve".