39629919042 has 72 divisors (see below), whose sum is σ = 99998907372. Its totient is φ = 11309760000.

The previous prime is 39629919029. The next prime is 39629919059. The reversal of 39629919042 is 24091992693.

39629919042 is a `hidden beast` number, since 3 + 9 + 629 + 9 + 1 + 9 + 0 + 4 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 39624485481 + 5433561 = 199059^2 + 2331^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 39629919042.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 751542 + ... + 802542.

Almost surely, 2^39629919042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39629919042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49999453686).

39629919042 is an abundant number, since it is smaller than the sum of its proper divisors (60368988330).

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

39629919042 is a wasteful number, since it uses less digits than its factorization.

39629919042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51904 (or 51894 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 54.

The spelling of 39629919042 in words is "thirty-nine billion, six hundred twenty-nine million, nine hundred nineteen thousand, forty-two".