789874478987 has 4 divisors (see below), whose sum is σ = 861681249816. Its totient is φ = 718067708160.

The previous prime is 789874478963. The next prime is 789874479059.

789874478987 is nontrivially palindromic in base 10.

789874478987 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.

It is not a de Polignac number, because 789874478987 - 2²² = 789870284683 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 789874478899 and 789874478908.

It is not an unprimeable number, because it can be changed into a prime (789874478917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35903385398 + ... + 35903385419.

It is an arithmetic number, because the mean of its divisors is an integer number (215420312454).

Almost surely, 2^789874478987 is an apocalyptic number.

789874478987 is a deficient number, since it is larger than the sum of its proper divisors (71806770829).

789874478987 is a wasteful number, since it uses less digits than its factorization.

789874478987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71806770828.

The product of its digits is 12745506816, while the sum is 86.

The spelling of 789874478987 in words is "seven hundred eighty-nine billion, eight hundred seventy-four million, four hundred seventy-eight thousand, nine hundred eighty-seven".