12461389 has 2 divisors, whose sum is σ = 12461390. Its totient is φ = 12461388.

The previous prime is 12461369. The next prime is 12461401. The reversal of 12461389 is 98316421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8122500 + 4338889 = 2850^2 + 2083^2 .

It is a cyclic number.

It is not a de Polignac number, because 12461389 - 2⁷ = 12461261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12461369) 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, 6230694 + 6230695.

It is an arithmetic number, because the mean of its divisors is an integer number (6230695).

Almost surely, 2^12461389 is an apocalyptic number.

It is an amenable number.

12461389 is a deficient number, since it is larger than the sum of its proper divisors (1).

12461389 is an equidigital number, since it uses as much as digits as its factorization.

12461389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 34.

The square root of 12461389 is about 3530.0692627766. The cubic root of 12461389 is about 231.8402400410.

The spelling of 12461389 in words is "twelve million, four hundred sixty-one thousand, three hundred eighty-nine".