9940493 has 4 divisors (see below), whose sum is σ = 9972768. Its totient is φ = 9908220.

The previous prime is 9940471. The next prime is 9940501. The reversal of 9940493 is 3940499.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9940493 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 (9940433) 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, 15671 + ... + 16292.

It is an arithmetic number, because the mean of its divisors is an integer number (2493192).

Almost surely, 2^9940493 is an apocalyptic number.

It is an amenable number.

9940493 is a deficient number, since it is larger than the sum of its proper divisors (32275).

9940493 is a wasteful number, since it uses less digits than its factorization.

9940493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32274.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 9940493 is about 3152.8547381698. The cubic root of 9940493 is about 215.0152720358.

The spelling of 9940493 in words is "nine million, nine hundred forty thousand, four hundred ninety-three".