917046917749 has 4 divisors (see below), whose sum is σ = 934349689836. Its totient is φ = 899744145664.

The previous prime is 917046917719. The next prime is 917046917789. The reversal of 917046917749 is 947719640719.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 653203404100 + 263843513649 = 808210^2 + 513657^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-917046917749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (917046917719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8651385964 + ... + 8651386069.

It is an arithmetic number, because the mean of its divisors is an integer number (233587422459).

Almost surely, 2^917046917749 is an apocalyptic number.

It is an amenable number.

917046917749 is a deficient number, since it is larger than the sum of its proper divisors (17302772087).

917046917749 is a wasteful number, since it uses less digits than its factorization.

917046917749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17302772086.

The product of its (nonzero) digits is 24004512, while the sum is 64.

The spelling of 917046917749 in words is "nine hundred seventeen billion, forty-six million, nine hundred seventeen thousand, seven hundred forty-nine".