923923931617 has 4 divisors (see below), whose sum is σ = 925631739796. Its totient is φ = 922216123440.

The previous prime is 923923931603. The next prime is 923923931633. The reversal of 923923931617 is 716139329329.

It is a happy number.

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 255534294016 + 668389637601 = 505504^2 + 817551^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-923923931617 is a prime.

It is a super-2 number, since 2×923923931617² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (923923931647) 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, 853903278 + ... + 853904359.

It is an arithmetic number, because the mean of its divisors is an integer number (231407934949).

Almost surely, 2^923923931617 is an apocalyptic number.

It is an amenable number.

923923931617 is a deficient number, since it is larger than the sum of its proper divisors (1707808179).

923923931617 is a wasteful number, since it uses less digits than its factorization.

923923931617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1707808178.

The product of its digits is 3306744, while the sum is 55.

The spelling of 923923931617 in words is "nine hundred twenty-three billion, nine hundred twenty-three million, nine hundred thirty-one thousand, six hundred seventeen".