39912211338 has 16 divisors (see below), whose sum is σ = 84025708320. Its totient is φ = 12603856176.

The previous prime is 39912211331. The next prime is 39912211343. The reversal of 39912211338 is 83311221993.

It is a super-2 number, since 2×39912211338² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 39912211338.

It is not an unprimeable number, because it can be changed into a prime (39912211331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175053445 + ... + 175053672.

It is an arithmetic number, because the mean of its divisors is an integer number (5251606770).

Almost surely, 2^39912211338 is an apocalyptic number.

39912211338 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

39912211338 is an abundant number, since it is smaller than the sum of its proper divisors (44113496982).

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

39912211338 is a wasteful number, since it uses less digits than its factorization.

39912211338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350107141.

The product of its digits is 69984, while the sum is 42.

The spelling of 39912211338 in words is "thirty-nine billion, nine hundred twelve million, two hundred eleven thousand, three hundred thirty-eight".