12020389 has 2 divisors, whose sum is σ = 12020390. Its totient is φ = 12020388.

The previous prime is 12020383. The next prime is 12020417. The reversal of 12020389 is 98302021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6100900 + 5919489 = 2470^2 + 2433^2 .

It is a cyclic number.

It is not a de Polignac number, because 12020389 - 2³ = 12020381 is a prime.

It is a super-2 number, since 2×12020389² = 288979503422642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12020381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010194 + 6010195.

It is an arithmetic number, because the mean of its divisors is an integer number (6010195).

Almost surely, 2^12020389 is an apocalyptic number.

It is an amenable number.

12020389 is a deficient number, since it is larger than the sum of its proper divisors (1).

12020389 is an equidigital number, since it uses as much as digits as its factorization.

12020389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 12020389 is about 3467.0432648007. The cubic root of 12020389 is about 229.0724394691.

The spelling of 12020389 in words is "twelve million, twenty thousand, three hundred eighty-nine".