823973923906 has 16 divisors (see below), whose sum is σ = 1412639553024. Its totient is φ = 353103475104.

The previous prime is 823973923879. The next prime is 823973923909. The reversal of 823973923906 is 609329379328.

823973923906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×823973923906³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (823973923909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2168530 + ... + 2520013.

It is an arithmetic number, because the mean of its divisors is an integer number (88289972064).

Almost surely, 2^823973923906 is an apocalyptic number.

823973923906 is a deficient number, since it is larger than the sum of its proper divisors (588665629118).

823973923906 is a wasteful number, since it uses less digits than its factorization.

823973923906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4701105.

The product of its (nonzero) digits is 26453952, while the sum is 61.

The spelling of 823973923906 in words is "eight hundred twenty-three billion, nine hundred seventy-three million, nine hundred twenty-three thousand, nine hundred six".