869275397 has 2 divisors, whose sum is σ = 869275398. Its totient is φ = 869275396.

The previous prime is 869275391. The next prime is 869275453. The reversal of 869275397 is 793572968.

It is an a-pointer prime, because the next prime (869275453) can be obtained adding 869275397 to its sum of digits (56).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 727165156 + 142110241 = 26966^2 + 11921^2 .

It is a cyclic number.

It is not a de Polignac number, because 869275397 - 2⁶ = 869275333 is a prime.

It is a super-3 number, since 3×869275397³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (869275391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434637698 + 434637699.

It is an arithmetic number, because the mean of its divisors is an integer number (434637699).

Almost surely, 2^869275397 is an apocalyptic number.

It is an amenable number.

869275397 is a deficient number, since it is larger than the sum of its proper divisors (1).

869275397 is an equidigital number, since it uses as much as digits as its factorization.

869275397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5715360, while the sum is 56.

The square root of 869275397 is about 29483.4766776240. The cubic root of 869275397 is about 954.3751646768.

The spelling of 869275397 in words is "eight hundred sixty-nine million, two hundred seventy-five thousand, three hundred ninety-seven".