9912427 has 4 divisors (see below), whose sum is σ = 11328496. Its totient is φ = 8496360.

The previous prime is 9912421. The next prime is 9912481. The reversal of 9912427 is 7242199.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9912427 - 2¹⁵ = 9879659 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9912392 and 9912401.

It is not an unprimeable number, because it can be changed into a prime (9912421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 708024 + ... + 708037.

It is an arithmetic number, because the mean of its divisors is an integer number (2832124).

Almost surely, 2^9912427 is an apocalyptic number.

9912427 is a deficient number, since it is larger than the sum of its proper divisors (1416069).

9912427 is a wasteful number, since it uses less digits than its factorization.

9912427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416068.

The product of its digits is 9072, while the sum is 34.

The square root of 9912427 is about 3148.4007051200. The cubic root of 9912427 is about 214.8127231637.

The spelling of 9912427 in words is "nine million, nine hundred twelve thousand, four hundred twenty-seven".