126829949 has 6 divisors (see below), whose sum is σ = 127379070. Its totient is φ = 126282360.

The previous prime is 126829943. The next prime is 126829951. The reversal of 126829949 is 949928621.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 94225849 + 32604100 = 9707^2 + 5710^2 .

It is not a de Polignac number, because 126829949 - 2²⁰ = 125781373 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126829897 and 126829906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126829943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 221834 + ... + 222404.

It is an arithmetic number, because the mean of its divisors is an integer number (21229845).

Almost surely, 2^126829949 is an apocalyptic number.

It is an amenable number.

126829949 is a deficient number, since it is larger than the sum of its proper divisors (549121).

126829949 is an frugal number, since it uses more digits than its factorization.

126829949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531 (or 960 counting only the distinct ones).

The product of its digits is 559872, while the sum is 50.

The square root of 126829949 is about 11261.8803492134. The cubic root of 126829949 is about 502.4281213657.

The spelling of 126829949 in words is "one hundred twenty-six million, eight hundred twenty-nine thousand, nine hundred forty-nine".