11812447 has 4 divisors (see below), whose sum is σ = 11885080. Its totient is φ = 11739816.

The previous prime is 11812403. The next prime is 11812459. The reversal of 11812447 is 74421811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74421811 = 8017 ⋅9283.

It is a cyclic number.

It is not a de Polignac number, because 11812447 - 2²³ = 3423839 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 (11813447) 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, 36072 + ... + 36397.

It is an arithmetic number, because the mean of its divisors is an integer number (2971270).

Almost surely, 2^11812447 is an apocalyptic number.

11812447 is a deficient number, since it is larger than the sum of its proper divisors (72633).

11812447 is an equidigital number, since it uses as much as digits as its factorization.

11812447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72632.

The product of its digits is 1792, while the sum is 28.

The square root of 11812447 is about 3436.9240608428. The cubic root of 11812447 is about 227.7438322781.

The spelling of 11812447 in words is "eleven million, eight hundred twelve thousand, four hundred forty-seven".