12056389 has 2 divisors, whose sum is σ = 12056390. Its totient is φ = 12056388.

The previous prime is 12056371. The next prime is 12056399. The reversal of 12056389 is 98365021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7935489 + 4120900 = 2817^2 + 2030^2 .

It is a cyclic number.

It is not a de Polignac number, because 12056389 - 2⁵ = 12056357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12056399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6028194 + 6028195.

It is an arithmetic number, because the mean of its divisors is an integer number (6028195).

Almost surely, 2^12056389 is an apocalyptic number.

It is an amenable number.

12056389 is a deficient number, since it is larger than the sum of its proper divisors (1).

12056389 is an equidigital number, since it uses as much as digits as its factorization.

12056389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 12056389 is about 3472.2311270997. The cubic root of 12056389 is about 229.3008954387.

The spelling of 12056389 in words is "twelve million, fifty-six thousand, three hundred eighty-nine".