126091489 has 2 divisors, whose sum is σ = 126091490. Its totient is φ = 126091488.

The previous prime is 126091457. The next prime is 126091501. The reversal of 126091489 is 984190621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125821089 + 270400 = 11217^2 + 520^2 .

It is a cyclic number.

It is not a de Polignac number, because 126091489 - 2⁵ = 126091457 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (126091409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63045744 + 63045745.

It is an arithmetic number, because the mean of its divisors is an integer number (63045745).

Almost surely, 2^126091489 is an apocalyptic number.

It is an amenable number.

126091489 is a deficient number, since it is larger than the sum of its proper divisors (1).

126091489 is an equidigital number, since it uses as much as digits as its factorization.

126091489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 126091489 is about 11229.0466647886. The cubic root of 126091489 is about 501.4511031916.

The spelling of 126091489 in words is "one hundred twenty-six million, ninety-one thousand, four hundred eighty-nine".