12249147 has 8 divisors (see below), whose sum is σ = 16405056. Its totient is φ = 8129672.

The previous prime is 12249143. The next prime is 12249151. The reversal of 12249147 is 74194221.

It is an interprime number because it is at equal distance from previous prime (12249143) and next prime (12249151).

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 12249147 - 2² = 12249143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12249143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8313 + ... + 9674.

It is an arithmetic number, because the mean of its divisors is an integer number (2050632).

Almost surely, 2^12249147 is an apocalyptic number.

12249147 is a deficient number, since it is larger than the sum of its proper divisors (4155909).

12249147 is a wasteful number, since it uses less digits than its factorization.

12249147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18217.

The product of its digits is 4032, while the sum is 30.

The square root of 12249147 is about 3499.8781407358. The cubic root of 12249147 is about 230.5164638635.

The spelling of 12249147 in words is "twelve million, two hundred forty-nine thousand, one hundred forty-seven".