12047149 has 2 divisors, whose sum is σ = 12047150. Its totient is φ = 12047148.

The previous prime is 12047137. The next prime is 12047173. The reversal of 12047149 is 94174021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9180900 + 2866249 = 3030^2 + 1693^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12047149 is a prime.

It is equal to p₇₉₀₉₃₀ and since 12047149 and 790930 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12047249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6023574 + 6023575.

It is an arithmetic number, because the mean of its divisors is an integer number (6023575).

Almost surely, 2^12047149 is an apocalyptic number.

It is an amenable number.

12047149 is a deficient number, since it is larger than the sum of its proper divisors (1).

12047149 is an equidigital number, since it uses as much as digits as its factorization.

12047149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 12047149 is about 3470.9003154801. The cubic root of 12047149 is about 229.2423018369.

The spelling of 12047149 in words is "twelve million, forty-seven thousand, one hundred forty-nine".