126886189 has 4 divisors (see below), whose sum is σ = 127189440. Its totient is φ = 126582940.

The previous prime is 126886183. The next prime is 126886241. The reversal of 126886189 is 981688621.

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: 981688621 = 191 ⋅5139731.

It is a cyclic number.

It is not a de Polignac number, because 126886189 - 2⁵ = 126886157 is a prime.

It is a super-2 number, since 2×126886189² = 32200209917887442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126886183) 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, 150997 + ... + 151834.

It is an arithmetic number, because the mean of its divisors is an integer number (31797360).

Almost surely, 2^126886189 is an apocalyptic number.

It is an amenable number.

126886189 is a deficient number, since it is larger than the sum of its proper divisors (303251).

126886189 is an equidigital number, since it uses as much as digits as its factorization.

126886189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303250.

The product of its digits is 331776, while the sum is 49.

The square root of 126886189 is about 11264.3769912055. The cubic root of 126886189 is about 502.5023740224.

The spelling of 126886189 in words is "one hundred twenty-six million, eight hundred eighty-six thousand, one hundred eighty-nine".