9940312 has 16 divisors (see below), whose sum is σ = 19035360. Its totient is φ = 4864224.

The previous prime is 9940297. The next prime is 9940313. The reversal of 9940312 is 2130499.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9940313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12843 + ... + 13594.

It is an arithmetic number, because the mean of its divisors is an integer number (1189710).

Almost surely, 2^9940312 is an apocalyptic number.

It is an amenable number.

9940312 is a deficient number, since it is larger than the sum of its proper divisors (9095048).

9940312 is a wasteful number, since it uses less digits than its factorization.

9940312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26490 (or 26486 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 9940312 is about 3152.8260338940. The cubic root of 9940312 is about 215.0139670032.

The spelling of 9940312 in words is "nine million, nine hundred forty thousand, three hundred twelve".