12261847 has 4 divisors (see below), whose sum is σ = 13205080. Its totient is φ = 11318616.

The previous prime is 12261817. The next prime is 12261889. The reversal of 12261847 is 74816221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74816221 = 419 ⋅178559.

It is a cyclic number.

It is not a de Polignac number, because 12261847 - 2¹⁵ = 12229079 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 (12261817) 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, 471597 + ... + 471622.

It is an arithmetic number, because the mean of its divisors is an integer number (3301270).

Almost surely, 2^12261847 is an apocalyptic number.

12261847 is a deficient number, since it is larger than the sum of its proper divisors (943233).

12261847 is an equidigital number, since it uses as much as digits as its factorization.

12261847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943232.

The product of its digits is 5376, while the sum is 31.

The square root of 12261847 is about 3501.6920195814. The cubic root of 12261847 is about 230.5961033656.

The spelling of 12261847 in words is "twelve million, two hundred sixty-one thousand, eight hundred forty-seven".