869931187441 has 2 divisors, whose sum is σ = 869931187442. Its totient is φ = 869931187440.

The previous prime is 869931187409. The next prime is 869931187471. The reversal of 869931187441 is 144781139968.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 592961601600 + 276969585841 = 770040^2 + 526279^2 .

It is a cyclic number.

It is not a de Polignac number, because 869931187441 - 2⁵ = 869931187409 is a prime.

It is a super-2 number, since 2×869931187441² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 869931187441.

It is not a weakly prime, because it can be changed into another prime (869931187471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434965593720 + 434965593721.

It is an arithmetic number, because the mean of its divisors is an integer number (434965593721).

Almost surely, 2^869931187441 is an apocalyptic number.

It is an amenable number.

869931187441 is a deficient number, since it is larger than the sum of its proper divisors (1).

869931187441 is an equidigital number, since it uses as much as digits as its factorization.

869931187441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10450944, while the sum is 61.

The spelling of 869931187441 in words is "eight hundred sixty-nine billion, nine hundred thirty-one million, one hundred eighty-seven thousand, four hundred forty-one".