9912479 has 4 divisors (see below), whose sum is σ = 10495584. Its totient is φ = 9329376.

The previous prime is 9912421. The next prime is 9912481. The reversal of 9912479 is 9742199.

It is a happy number.

9912479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9912479 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 (9912499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291527 + ... + 291560.

It is an arithmetic number, because the mean of its divisors is an integer number (2623896).

Almost surely, 2^9912479 is an apocalyptic number.

9912479 is a deficient number, since it is larger than the sum of its proper divisors (583105).

9912479 is a wasteful number, since it uses less digits than its factorization.

9912479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583104.

The product of its digits is 40824, while the sum is 41.

The square root of 9912479 is about 3148.4089632702. The cubic root of 9912479 is about 214.8130987947.

The spelling of 9912479 in words is "nine million, nine hundred twelve thousand, four hundred seventy-nine".