12649223 has 2 divisors, whose sum is σ = 12649224. Its totient is φ = 12649222.

The previous prime is 12649213. The next prime is 12649237. The reversal of 12649223 is 32294621.

It is a weak prime.

It is an emirp because it is prime and its reverse (32294621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12649223 - 2¹⁴ = 12632839 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12649213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6324611 + 6324612.

It is an arithmetic number, because the mean of its divisors is an integer number (6324612).

Almost surely, 2^12649223 is an apocalyptic number.

12649223 is a deficient number, since it is larger than the sum of its proper divisors (1).

12649223 is an equidigital number, since it uses as much as digits as its factorization.

12649223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 29.

The square root of 12649223 is about 3556.5746161159. The cubic root of 12649223 is about 232.9993000403. Note that the first 3 decimals are identical.

The spelling of 12649223 in words is "twelve million, six hundred forty-nine thousand, two hundred twenty-three".