12457447 has 8 divisors (see below), whose sum is σ = 13377312. Its totient is φ = 11558400.

The previous prime is 12457429. The next prime is 12457451. The reversal of 12457447 is 74475421.

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 12457447 - 2²³ = 4068839 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 (12457427) 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, 3954 + ... + 6367.

It is an arithmetic number, because the mean of its divisors is an integer number (1672164).

Almost surely, 2^12457447 is an apocalyptic number.

12457447 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12457447 is a deficient number, since it is larger than the sum of its proper divisors (919865).

12457447 is a wasteful number, since it uses less digits than its factorization.

12457447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10409.

The product of its digits is 31360, while the sum is 34.

The square root of 12457447 is about 3529.5108726281. The cubic root of 12457447 is about 231.8157909042.

The spelling of 12457447 in words is "twelve million, four hundred fifty-seven thousand, four hundred forty-seven".