869961881 has 8 divisors (see below), whose sum is σ = 873414144. Its totient is φ = 866516800.

The previous prime is 869961877. The next prime is 869961889. The reversal of 869961881 is 188169968.

869961881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 869961881 - 2² = 869961877 is a prime.

It is a super-2 number, since 2×869961881² = 1513667348786116322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (869961889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393080 + ... + 395286.

It is an arithmetic number, because the mean of its divisors is an integer number (109176768).

Almost surely, 2^869961881 is an apocalyptic number.

It is an amenable number.

869961881 is a deficient number, since it is larger than the sum of its proper divisors (3452263).

869961881 is a wasteful number, since it uses less digits than its factorization.

869961881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3591.

The product of its digits is 1492992, while the sum is 56.

The square root of 869961881 is about 29495.1162228597. The cubic root of 869961881 is about 954.6263282295.

The spelling of 869961881 in words is "eight hundred sixty-nine million, nine hundred sixty-one thousand, eight hundred eighty-one".