12238913 has 2 divisors, whose sum is σ = 12238914. Its totient is φ = 12238912.

The previous prime is 12238883. The next prime is 12238939. The reversal of 12238913 is 31983221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9443329 + 2795584 = 3073^2 + 1672^2 .

It is a cyclic number.

It is not a de Polignac number, because 12238913 - 2²⁰ = 11190337 is a prime.

It is a super-4 number, since 4×12238913⁴ (a number of 29 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (12238943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6119456 + 6119457.

It is an arithmetic number, because the mean of its divisors is an integer number (6119457).

Almost surely, 2^12238913 is an apocalyptic number.

It is an amenable number.

12238913 is a deficient number, since it is larger than the sum of its proper divisors (1).

12238913 is an equidigital number, since it uses as much as digits as its factorization.

12238913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 29.

The square root of 12238913 is about 3498.4157843230. The cubic root of 12238913 is about 230.4522481595.

The spelling of 12238913 in words is "twelve million, two hundred thirty-eight thousand, nine hundred thirteen".