126394389 has 12 divisors (see below), whose sum is σ = 199167072. Its totient is φ = 76602600.

The previous prime is 126394369. The next prime is 126394423. The reversal of 126394389 is 983493621.

It is a happy number.

126394389 is a `hidden beast` number, since 1 + 2 + 639 + 4 + 3 + 8 + 9 = 666.

It is not a de Polignac number, because 126394389 - 2⁹ = 126393877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126394339) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 638257 + ... + 638454.

It is an arithmetic number, because the mean of its divisors is an integer number (16597256).

Almost surely, 2^126394389 is an apocalyptic number.

It is an amenable number.

126394389 is a deficient number, since it is larger than the sum of its proper divisors (72772683).

126394389 is a wasteful number, since it uses less digits than its factorization.

126394389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276728 (or 1276725 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 126394389 is about 11242.5259172483. The cubic root of 126394389 is about 501.8523147198.

The spelling of 126394389 in words is "one hundred twenty-six million, three hundred ninety-four thousand, three hundred eighty-nine".