89439927642 has 48 divisors (see below), whose sum is σ = 212114397768. Its totient is φ = 27068826240.

The previous prime is 89439927637. The next prime is 89439927653. The reversal of 89439927642 is 24672993498.

89439927642 is a `hidden beast` number, since 8 + 9 + 439 + 92 + 76 + 42 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 66729739041 + 22710188601 = 258321^2 + 150699^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 89439927642.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3118693 + ... + 3147240.

Almost surely, 2^89439927642 is an apocalyptic number.

89439927642 is an abundant number, since it is smaller than the sum of its proper divisors (122674470126).

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

89439927642 is a wasteful number, since it uses less digits than its factorization.

89439927642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6266015 (or 6266012 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 63.

The spelling of 89439927642 in words is "eighty-nine billion, four hundred thirty-nine million, nine hundred twenty-seven thousand, six hundred forty-two".