9940231 has 8 divisors (see below), whose sum is σ = 11390624. Its totient is φ = 8497440.

The previous prime is 9940219. The next prime is 9940241. The reversal of 9940231 is 1320499.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9940231 - 2⁵ = 9940199 is a prime.

It is a super-2 number, since 2×9940231² = 197616384666722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9940231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9940241) 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 7 ways as a sum of consecutive naturals, for example, 1261 + ... + 4633.

It is an arithmetic number, because the mean of its divisors is an integer number (1423828).

Almost surely, 2^9940231 is an apocalyptic number.

9940231 is a deficient number, since it is larger than the sum of its proper divisors (1450393).

9940231 is a wasteful number, since it uses less digits than its factorization.

9940231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3801.

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

The square root of 9940231 is about 3152.8131882495. The cubic root of 9940231 is about 215.0133829780.

The spelling of 9940231 in words is "nine million, nine hundred forty thousand, two hundred thirty-one".