12147829 has 2 divisors, whose sum is σ = 12147830. Its totient is φ = 12147828.

The previous prime is 12147827. The next prime is 12147833. The reversal of 12147829 is 92874121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12040900 + 106929 = 3470^2 + 327^2 .

It is a cyclic number.

It is not a de Polignac number, because 12147829 - 2¹ = 12147827 is a prime.

Together with 12147827, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12147794 and 12147803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12147823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6073914 + 6073915.

It is an arithmetic number, because the mean of its divisors is an integer number (6073915).

Almost surely, 2^12147829 is an apocalyptic number.

It is an amenable number.

12147829 is a deficient number, since it is larger than the sum of its proper divisors (1).

12147829 is an equidigital number, since it uses as much as digits as its factorization.

12147829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 34.

The square root of 12147829 is about 3485.3735811244. The cubic root of 12147829 is about 229.8791362458.

The spelling of 12147829 in words is "twelve million, one hundred forty-seven thousand, eight hundred twenty-nine".