126386389 has 4 divisors (see below), whose sum is σ = 126437760. Its totient is φ = 126335020.

The previous prime is 126386371. The next prime is 126386443. The reversal of 126386389 is 983683621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 983683621 = 61 ⋅16125961.

It is a cyclic number.

It is not a de Polignac number, because 126386389 - 2²¹ = 124289237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126386329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21799 + ... + 26980.

It is an arithmetic number, because the mean of its divisors is an integer number (31609440).

Almost surely, 2^126386389 is an apocalyptic number.

It is an amenable number.

126386389 is a deficient number, since it is larger than the sum of its proper divisors (51371).

126386389 is an equidigital number, since it uses as much as digits as its factorization.

126386389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51370.

The product of its digits is 373248, while the sum is 46.

The square root of 126386389 is about 11242.1701196877. The cubic root of 126386389 is about 501.8417264248.

The spelling of 126386389 in words is "one hundred twenty-six million, three hundred eighty-six thousand, three hundred eighty-nine".