39887084421889 has 4 divisors (see below), whose sum is σ = 41986404654640. Its totient is φ = 37787764189140.

The previous prime is 39887084421881. The next prime is 39887084421893. The reversal of 39887084421889 is 98812448078893.

39887084421889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 39887084421889 - 2³ = 39887084421881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39887084421881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1049660116347 + ... + 1049660116384.

It is an arithmetic number, because the mean of its divisors is an integer number (10496601163660).

Almost surely, 2^{39887084421889} is an apocalyptic number.

It is an amenable number.

39887084421889 is a deficient number, since it is larger than the sum of its proper divisors (2099320232751).

39887084421889 is a wasteful number, since it uses less digits than its factorization.

39887084421889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2099320232750.

The product of its (nonzero) digits is 1783627776, while the sum is 79.

The spelling of 39887084421889 in words is "thirty-nine trillion, eight hundred eighty-seven billion, eighty-four million, four hundred twenty-one thousand, eight hundred eighty-nine".