126286389 has 6 divisors (see below), whose sum is σ = 182413686. Its totient is φ = 84190920.

The previous prime is 126286379. The next prime is 126286397. The reversal of 126286389 is 983682621.

126286389 is a `hidden beast` number, since 1 + 2 + 6 + 2 + 8 + 638 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 108368100 + 17918289 = 10410^2 + 4233^2 .

It is not a de Polignac number, because 126286389 - 2¹² = 126282293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126286309) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7015902 + ... + 7015919.

It is an arithmetic number, because the mean of its divisors is an integer number (30402281).

Almost surely, 2^126286389 is an apocalyptic number.

It is an amenable number.

126286389 is a deficient number, since it is larger than the sum of its proper divisors (56127297).

126286389 is a wasteful number, since it uses less digits than its factorization.

126286389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14031827 (or 14031824 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 126286389 is about 11237.7216997041. The cubic root of 126286389 is about 501.7093350217.

The spelling of 126286389 in words is "one hundred twenty-six million, two hundred eighty-six thousand, three hundred eighty-nine".