938656823 has 4 divisors (see below), whose sum is σ = 1010861208. Its totient is φ = 866452440.

The previous prime is 938656799. The next prime is 938656897. The reversal of 938656823 is 328656839.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-938656823 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 (938626823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36102173 + ... + 36102198.

It is an arithmetic number, because the mean of its divisors is an integer number (252715302).

Almost surely, 2^938656823 is an apocalyptic number.

938656823 is a deficient number, since it is larger than the sum of its proper divisors (72204385).

938656823 is a wasteful number, since it uses less digits than its factorization.

938656823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72204384.

The product of its digits is 1866240, while the sum is 50.

The square root of 938656823 is about 30637.5068013048. The cubic root of 938656823 is about 979.1193056201.

The spelling of 938656823 in words is "nine hundred thirty-eight million, six hundred fifty-six thousand, eight hundred twenty-three".