840964709223 has 24 divisors (see below), whose sum is σ = 1229391985536. Its totient is φ = 553912304400.

The previous prime is 840964709173. The next prime is 840964709231. The reversal of 840964709223 is 322907469048.

840964709223 is a `hidden beast` number, since 8 + 409 + 6 + 4 + 7 + 0 + 9 + 223 = 666.

It is not a de Polignac number, because 840964709223 - 2⁸ = 840964708967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 840964709223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840964707223) 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 23 ways as a sum of consecutive naturals, for example, 1303483 + ... + 1838748.

It is an arithmetic number, because the mean of its divisors is an integer number (51224666064).

Almost surely, 2^840964709223 is an apocalyptic number.

840964709223 is a deficient number, since it is larger than the sum of its proper divisors (388427276313).

840964709223 is a wasteful number, since it uses less digits than its factorization.

840964709223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3142595 (or 3142592 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The spelling of 840964709223 in words is "eight hundred forty billion, nine hundred sixty-four million, seven hundred nine thousand, two hundred twenty-three".