9940427 has 16 divisors (see below), whose sum is σ = 12160512. Its totient is φ = 7931520.

The previous prime is 9940397. The next prime is 9940433. The reversal of 9940427 is 7240499.

It is not a de Polignac number, because 9940427 - 2¹⁰ = 9939403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9940027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11852 + ... + 12662.

It is an arithmetic number, because the mean of its divisors is an integer number (760032).

Almost surely, 2^9940427 is an apocalyptic number.

9940427 is a deficient number, since it is larger than the sum of its proper divisors (2220085).

9940427 is a wasteful number, since it uses less digits than its factorization.

9940427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 9940427 is about 3152.8442714476. The cubic root of 9940427 is about 215.0147961694.

The spelling of 9940427 in words is "nine million, nine hundred forty thousand, four hundred twenty-seven".