869604881 has 2 divisors, whose sum is σ = 869604882. Its totient is φ = 869604880.

The previous prime is 869604877. The next prime is 869604887. The reversal of 869604881 is 188406968.

It is a happy number.

869604881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 464790481 + 404814400 = 21559^2 + 20120^2 .

It is a cyclic number.

It is not a de Polignac number, because 869604881 - 2² = 869604877 is a prime.

It is a super-2 number, since 2×869604881² = 1512425298118048322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (869604887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434802440 + 434802441.

It is an arithmetic number, because the mean of its divisors is an integer number (434802441).

Almost surely, 2^869604881 is an apocalyptic number.

It is an amenable number.

869604881 is a deficient number, since it is larger than the sum of its proper divisors (1).

869604881 is an equidigital number, since it uses as much as digits as its factorization.

869604881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 663552, while the sum is 50.

The square root of 869604881 is about 29489.0637525168. The cubic root of 869604881 is about 954.4957293168.

The spelling of 869604881 in words is "eight hundred sixty-nine million, six hundred four thousand, eight hundred eighty-one".