499999129 has 8 divisors (see below), whose sum is σ = 572044928. Its totient is φ = 428107680.

The previous prime is 499999103. The next prime is 499999133. The reversal of 499999129 is 921999994.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-499999129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (499999229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31557 + ... + 44674.

It is an arithmetic number, because the mean of its divisors is an integer number (71505616).

Almost surely, 2^499999129 is an apocalyptic number.

It is an amenable number.

499999129 is a deficient number, since it is larger than the sum of its proper divisors (72045799).

499999129 is an equidigital number, since it uses as much as digits as its factorization.

499999129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77175.

The product of its digits is 4251528, while the sum is 61.

The square root of 499999129 is about 22360.6602988373. The cubic root of 499999129 is about 793.7000651084.

The spelling of 499999129 in words is "four hundred ninety-nine million, nine hundred ninety-nine thousand, one hundred twenty-nine".