923989868 has 12 divisors (see below), whose sum is σ = 1620736992. Its totient is φ = 460922160.

The previous prime is 923989867. The next prime is 923989877. The reversal of 923989868 is 868989329.

It is a self number, because there is not a number n which added to its sum of digits gives 923989868.

It is not an unprimeable number, because it can be changed into a prime (923989867) 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, 266255 + ... + 269702.

It is an arithmetic number, because the mean of its divisors is an integer number (135061416).

Almost surely, 2^923989868 is an apocalyptic number.

It is an amenable number.

923989868 is a deficient number, since it is larger than the sum of its proper divisors (696747124).

923989868 is a wasteful number, since it uses less digits than its factorization.

923989868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536392 (or 536390 counting only the distinct ones).

The product of its digits is 13436928, while the sum is 62.

The square root of 923989868 is about 30397.2016475201. The cubic root of 923989868 is about 973.9927772487.

The spelling of 923989868 in words is "nine hundred twenty-three million, nine hundred eighty-nine thousand, eight hundred sixty-eight".