869676099449 has 2 divisors, whose sum is σ = 869676099450. Its totient is φ = 869676099448.

The previous prime is 869676099433. The next prime is 869676099473. The reversal of 869676099449 is 944990676968.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 868823459449 + 852640000 = 932107^2 + 29200^2 .

It is a cyclic number.

It is not a de Polignac number, because 869676099449 - 2⁴ = 869676099433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 869676099449.

It is not a weakly prime, because it can be changed into another prime (869676099419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434838049724 + 434838049725.

It is an arithmetic number, because the mean of its divisors is an integer number (434838049725).

Almost surely, 2^869676099449 is an apocalyptic number.

It is an amenable number.

869676099449 is a deficient number, since it is larger than the sum of its proper divisors (1).

869676099449 is an equidigital number, since it uses as much as digits as its factorization.

869676099449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1269789696, while the sum is 77.

The spelling of 869676099449 in words is "eight hundred sixty-nine billion, six hundred seventy-six million, ninety-nine thousand, four hundred forty-nine".