83939894442 has 12 divisors (see below), whose sum is σ = 181869771330. Its totient is φ = 27979964808.

The previous prime is 83939894431. The next prime is 83939894453. The reversal of 83939894442 is 24449893938.

83939894442 is a `hidden beast` number, since 83 + 9 + 39 + 89 + 4 + 442 = 666.

It is an interprime number because it is at equal distance from previous prime (83939894431) and next prime (83939894453).

It can be written as a sum of positive squares in only one way, i.e., 62941276161 + 20998618281 = 250881^2 + 144909^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 83939894442.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2331663717 + ... + 2331663752.

Almost surely, 2^83939894442 is an apocalyptic number.

83939894442 is an abundant number, since it is smaller than the sum of its proper divisors (97929876888).

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

83939894442 is a wasteful number, since it uses less digits than its factorization.

83939894442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4663327477 (or 4663327474 counting only the distinct ones).

The product of its digits is 53747712, while the sum is 63.

The spelling of 83939894442 in words is "eighty-three billion, nine hundred thirty-nine million, eight hundred ninety-four thousand, four hundred forty-two".