12401189 has 2 divisors, whose sum is σ = 12401190. Its totient is φ = 12401188.

The previous prime is 12401173. The next prime is 12401251. The reversal of 12401189 is 98110421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10510564 + 1890625 = 3242^2 + 1375^2 .

It is a cyclic number.

It is not a de Polignac number, because 12401189 - 2⁴ = 12401173 is a prime.

It is a super-2 number, since 2×12401189² = 307578977227442, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12401149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6200594 + 6200595.

It is an arithmetic number, because the mean of its divisors is an integer number (6200595).

Almost surely, 2^12401189 is an apocalyptic number.

It is an amenable number.

12401189 is a deficient number, since it is larger than the sum of its proper divisors (1).

12401189 is an equidigital number, since it uses as much as digits as its factorization.

12401189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 12401189 is about 3521.5321949402. The cubic root of 12401189 is about 231.4663031903.

The spelling of 12401189 in words is "twelve million, four hundred one thousand, one hundred eighty-nine".