39435912852 has 72 divisors (see below), whose sum is σ = 107316125280. Its totient is φ = 11238373440.

The previous prime is 39435912829. The next prime is 39435912863. The reversal of 39435912852 is 25821953493.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 39435912795 and 39435912804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 142527 + ... + 314937.

It is an arithmetic number, because the mean of its divisors is an integer number (1490501740).

Almost surely, 2^39435912852 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39435912852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53658062640).

39435912852 is an abundant number, since it is smaller than the sum of its proper divisors (67880212428).

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

39435912852 is a wasteful number, since it uses less digits than its factorization.

39435912852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172821 (or 172812 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 51.

The spelling of 39435912852 in words is "thirty-nine billion, four hundred thirty-five million, nine hundred twelve thousand, eight hundred fifty-two".