9939423 has 8 divisors (see below), whose sum is σ = 14272048. Its totient is φ = 6116544.

The previous prime is 9939403. The next prime is 9939463. The reversal of 9939423 is 3249399.

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

It is not a de Polignac number, because 9939423 - 2⁶ = 9939359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 254857 = 9939423 / (9 + 9 + 3 + 9 + 4 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9939403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127390 + ... + 127467.

It is an arithmetic number, because the mean of its divisors is an integer number (1784006).

Almost surely, 2^9939423 is an apocalyptic number.

9939423 is a deficient number, since it is larger than the sum of its proper divisors (4332625).

9939423 is a wasteful number, since it uses less digits than its factorization.

9939423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254873.

The product of its digits is 52488, while the sum is 39.

The square root of 9939423 is about 3152.6850461155. The cubic root of 9939423 is about 215.0075569725.

The spelling of 9939423 in words is "nine million, nine hundred thirty-nine thousand, four hundred twenty-three".