869071393 has 2 divisors, whose sum is σ = 869071394. Its totient is φ = 869071392.

The previous prime is 869071387. The next prime is 869071397. The reversal of 869071393 is 393170968.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 539539984 + 329531409 = 23228^2 + 18153^2 .

It is a cyclic number.

It is not a de Polignac number, because 869071393 - 2¹³ = 869063201 is a prime.

It is a super-3 number, since 3×869071393³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (869071397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434535696 + 434535697.

It is an arithmetic number, because the mean of its divisors is an integer number (434535697).

Almost surely, 2^869071393 is an apocalyptic number.

It is an amenable number.

869071393 is a deficient number, since it is larger than the sum of its proper divisors (1).

869071393 is an equidigital number, since it uses as much as digits as its factorization.

869071393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 869071393 is about 29480.0168419219. The cubic root of 869071393 is about 954.3005003512.

The spelling of 869071393 in words is "eight hundred sixty-nine million, seventy-one thousand, three hundred ninety-three".