126829917 has 6 divisors (see below), whose sum is σ = 183198782. Its totient is φ = 84553272.

The previous prime is 126829907. The next prime is 126829931. The reversal of 126829917 is 719928621.

It can be written as a sum of positive squares in only one way, i.e., 77633721 + 49196196 = 8811^2 + 7014^2 .

It is not a de Polignac number, because 126829917 - 2⁶ = 126829853 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 (126829907) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7046098 + ... + 7046115.

Almost surely, 2^126829917 is an apocalyptic number.

It is an amenable number.

126829917 is a deficient number, since it is larger than the sum of its proper divisors (56368865).

126829917 is a wasteful number, since it uses less digits than its factorization.

126829917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14092219 (or 14092216 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 126829917 is about 11261.8789284915. The cubic root of 126829917 is about 502.4280791105.

The spelling of 126829917 in words is "one hundred twenty-six million, eight hundred twenty-nine thousand, nine hundred seventeen".