869369 has 2 divisors, whose sum is σ = 869370. Its totient is φ = 869368.

The previous prime is 869339. The next prime is 869371. The reversal of 869369 is 963968.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 619369 + 250000 = 787^2 + 500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-869369 is a prime.

It is a super-2 number, since 2×869369² = 1511604916322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 869371, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (869339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434684 + 434685.

It is an arithmetic number, because the mean of its divisors is an integer number (434685).

2⁸⁶⁹³⁶⁹ is an apocalyptic number.

It is an amenable number.

869369 is a deficient number, since it is larger than the sum of its proper divisors (1).

869369 is an equidigital number, since it uses as much as digits as its factorization.

869369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 41.

The square root of 869369 is about 932.3995924495. The cubic root of 869369 is about 95.4409418943.

The spelling of 869369 in words is "eight hundred sixty-nine thousand, three hundred sixty-nine".