869893 has 2 divisors, whose sum is σ = 869894. Its totient is φ = 869892.

The previous prime is 869887. The next prime is 869899. The reversal of 869893 is 398968.

It is a balanced prime because it is at equal distance from previous prime (869887) and next prime (869899).

It can be written as a sum of positive squares in only one way, i.e., 438244 + 431649 = 662^2 + 657^2 .

It is a cyclic number.

It is not a de Polignac number, because 869893 - 2⁹ = 869381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (869899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434946 + 434947.

It is an arithmetic number, because the mean of its divisors is an integer number (434947).

2⁸⁶⁹⁸⁹³ is an apocalyptic number.

It is an amenable number.

869893 is a deficient number, since it is larger than the sum of its proper divisors (1).

869893 is an equidigital number, since it uses as much as digits as its factorization.

869893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 43.

The square root of 869893 is about 932.6805455246. The cubic root of 869893 is about 95.4601132738.

The spelling of 869893 in words is "eight hundred sixty-nine thousand, eight hundred ninety-three".