499990129 has 2 divisors, whose sum is σ = 499990130. Its totient is φ = 499990128.

The previous prime is 499990093. The next prime is 499990133. The reversal of 499990129 is 921099994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 499611904 + 378225 = 22352^2 + 615^2 .

It is a cyclic number.

It is not a de Polignac number, because 499990129 - 2¹¹ = 499988081 is a prime.

It is not a weakly prime, because it can be changed into another prime (499990199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249995064 + 249995065.

It is an arithmetic number, because the mean of its divisors is an integer number (249995065).

Almost surely, 2^499990129 is an apocalyptic number.

It is an amenable number.

499990129 is a deficient number, since it is larger than the sum of its proper divisors (1).

499990129 is an equidigital number, since it uses as much as digits as its factorization.

499990129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 472392, while the sum is 52.

The square root of 499990129 is about 22360.4590516385. The cubic root of 499990129 is about 793.6953028711.

The spelling of 499990129 in words is "four hundred ninety-nine million, nine hundred ninety thousand, one hundred twenty-nine".