126944449 has 2 divisors, whose sum is σ = 126944450. Its totient is φ = 126944448.

The previous prime is 126944443. The next prime is 126944533. The reversal of 126944449 is 944449621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104448400 + 22496049 = 10220^2 + 4743^2 .

It is a cyclic number.

It is not a de Polignac number, because 126944449 - 2⁵ = 126944417 is a prime.

It is a super-2 number, since 2×126944449² = 32229786263827202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126944443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63472224 + 63472225.

It is an arithmetic number, because the mean of its divisors is an integer number (63472225).

Almost surely, 2^126944449 is an apocalyptic number.

It is an amenable number.

126944449 is a deficient number, since it is larger than the sum of its proper divisors (1).

126944449 is an equidigital number, since it uses as much as digits as its factorization.

126944449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 43.

The square root of 126944449 is about 11266.9627229347. The cubic root of 126944449 is about 502.5792705153.

The spelling of 126944449 in words is "one hundred twenty-six million, nine hundred forty-four thousand, four hundred forty-nine".