869883987 has 16 divisors (see below), whose sum is σ = 1343697920. Its totient is φ = 490266432.

The previous prime is 869883979. The next prime is 869883991. The reversal of 869883987 is 789388968.

869883987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 869883987 - 2³ = 869883979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (869883967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 282187 + ... + 285252.

It is an arithmetic number, because the mean of its divisors is an integer number (83981120).

Almost surely, 2^869883987 is an apocalyptic number.

869883987 is a deficient number, since it is larger than the sum of its proper divisors (473813933).

869883987 is a wasteful number, since it uses less digits than its factorization.

869883987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567522.

The product of its digits is 41803776, while the sum is 66.

The square root of 869883987 is about 29493.7957374089. The cubic root of 869883987 is about 954.5978358383.

The spelling of 869883987 in words is "eight hundred sixty-nine million, eight hundred eighty-three thousand, nine hundred eighty-seven".