917952449869 has 12 divisors (see below), whose sum is σ = 1135995256416. Its totient is φ = 726292047312.

The previous prime is 917952449867. The next prime is 917952449927. The reversal of 917952449869 is 968944259719.

It is not a de Polignac number, because 917952449869 - 2¹ = 917952449867 is a prime.

It is a super-2 number, since 2×917952449869² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (917952449867) 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 in 11 ways as a sum of consecutive naturals, for example, 387975339 + ... + 387977704.

It is an arithmetic number, because the mean of its divisors is an integer number (94666271368).

Almost surely, 2^917952449869 is an apocalyptic number.

It is an amenable number.

917952449869 is a deficient number, since it is larger than the sum of its proper divisors (218042806547).

917952449869 is a wasteful number, since it uses less digits than its factorization.

917952449869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775953076 (or 775953063 counting only the distinct ones).

The product of its digits is 352719360, while the sum is 73.

The spelling of 917952449869 in words is "nine hundred seventeen billion, nine hundred fifty-two million, four hundred forty-nine thousand, eight hundred sixty-nine".