869584117 has 2 divisors, whose sum is σ = 869584118. Its totient is φ = 869584116.

The previous prime is 869584087. The next prime is 869584123. The reversal of 869584117 is 711485968.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 816016356 + 53567761 = 28566^2 + 7319^2 .

It is a cyclic number.

It is not a de Polignac number, because 869584117 - 2²⁷ = 735366389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (869584127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434792058 + 434792059.

It is an arithmetic number, because the mean of its divisors is an integer number (434792059).

Almost surely, 2^869584117 is an apocalyptic number.

It is an amenable number.

869584117 is a deficient number, since it is larger than the sum of its proper divisors (1).

869584117 is an equidigital number, since it uses as much as digits as its factorization.

869584117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 49.

The square root of 869584117 is about 29488.7116876950. The cubic root of 869584117 is about 954.4881322623.

The spelling of 869584117 in words is "eight hundred sixty-nine million, five hundred eighty-four thousand, one hundred seventeen".