9123988 has 12 divisors (see below), whose sum is σ = 16057440. Its totient is φ = 4536152.

The previous prime is 9123979. The next prime is 9124001. The reversal of 9123988 is 8893219.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 9123988.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5656 + ... + 7087.

It is an arithmetic number, because the mean of its divisors is an integer number (1338120).

Almost surely, 2^9123988 is an apocalyptic number.

It is an amenable number.

9123988 is a deficient number, since it is larger than the sum of its proper divisors (6933452).

9123988 is a wasteful number, since it uses less digits than its factorization.

9123988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12926 (or 12924 counting only the distinct ones).

The product of its digits is 31104, while the sum is 40.

The square root of 9123988 is about 3020.5939813222. The cubic root of 9123988 is about 208.9592344353.

It can be divided in two parts, 912 and 3988, that added together give a square (4900 = 70²).

The spelling of 9123988 in words is "nine million, one hundred twenty-three thousand, nine hundred eighty-eight".