9912478 has 8 divisors (see below), whose sum is σ = 14882472. Its totient is φ = 4951656.

The previous prime is 9912421. The next prime is 9912481. The reversal of 9912478 is 8742199.

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

It is a self number, because there is not a number n which added to its sum of digits gives 9912478.

It is a congruent number.

It is an unprimeable number.

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, 2076 + ... + 4912.

It is an arithmetic number, because the mean of its divisors is an integer number (1860309).

Almost surely, 2^9912478 is an apocalyptic number.

9912478 is a deficient number, since it is larger than the sum of its proper divisors (4969994).

9912478 is a wasteful number, since it uses less digits than its factorization.

9912478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4586.

The product of its digits is 36288, while the sum is 40.

The square root of 9912478 is about 3148.4088044598. The cubic root of 9912478 is about 214.8130915710.

The spelling of 9912478 in words is "nine million, nine hundred twelve thousand, four hundred seventy-eight".