12287447 has 4 divisors (see below), whose sum is σ = 13010256. Its totient is φ = 11564640.

The previous prime is 12287437. The next prime is 12287449. The reversal of 12287447 is 74478221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74478221 = 47 ⋅1584643.

It is a cyclic number.

It is not a de Polignac number, because 12287447 - 2⁶ = 12287383 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 (12287449) 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, 361379 + ... + 361412.

It is an arithmetic number, because the mean of its divisors is an integer number (3252564).

Almost surely, 2^12287447 is an apocalyptic number.

12287447 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12287447 is a deficient number, since it is larger than the sum of its proper divisors (722809).

12287447 is an equidigital number, since it uses as much as digits as its factorization.

12287447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722808.

The product of its digits is 25088, while the sum is 35.

The square root of 12287447 is about 3505.3454893919. The cubic root of 12287447 is about 230.7564695479.

The spelling of 12287447 in words is "twelve million, two hundred eighty-seven thousand, four hundred forty-seven".