789898987 has 4 divisors (see below), whose sum is σ = 789955240. Its totient is φ = 789842736.

The previous prime is 789898981. The next prime is 789898997.

789898987 is nontrivially palindromic in base 10.

789898987 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-789898987 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (789898981) 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, 12439 + ... + 41647.

It is an arithmetic number, because the mean of its divisors is an integer number (197488810).

Almost surely, 2^789898987 is an apocalyptic number.

789898987 is a deficient number, since it is larger than the sum of its proper divisors (56253).

789898987 is a wasteful number, since it uses less digits than its factorization.

789898987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56252.

The product of its digits is 146313216, while the sum is 73.

The square root of 789898987 is about 28105.1416470368. The cubic root of 789898987 is about 924.3941440963.

The spelling of 789898987 in words is "seven hundred eighty-nine million, eight hundred ninety-eight thousand, nine hundred eighty-seven".