12378047 has 8 divisors (see below), whose sum is σ = 13580112. Its totient is φ = 11188800.

The previous prime is 12378043. The next prime is 12378053. The reversal of 12378047 is 74087321.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12378047 - 2² = 12378043 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 (12378043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1118 + ... + 5099.

It is an arithmetic number, because the mean of its divisors is an integer number (1697514).

Almost surely, 2^12378047 is an apocalyptic number.

12378047 is a deficient number, since it is larger than the sum of its proper divisors (1202065).

12378047 is a wasteful number, since it uses less digits than its factorization.

12378047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6409.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 12378047 is about 3518.2448749341. The cubic root of 12378047 is about 231.3222329014.

The spelling of 12378047 in words is "twelve million, three hundred seventy-eight thousand, forty-seven".