999429 has 8 divisors (see below), whose sum is σ = 1349760. Its totient is φ = 657696.

The previous prime is 999389. The next prime is 999431. The reversal of 999429 is 924999.

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

It is not a de Polignac number, because 999429 - 2⁹ = 998917 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 999429.

It is not an unprimeable number, because it can be changed into a prime (999499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1872 + ... + 2345.

It is an arithmetic number, because the mean of its divisors is an integer number (168720).

2⁹⁹⁹⁴²⁹ is an apocalyptic number.

It is an amenable number.

999429 is a deficient number, since it is larger than the sum of its proper divisors (350331).

999429 is a wasteful number, since it uses less digits than its factorization.

999429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4299.

The product of its digits is 52488, while the sum is 42.

The square root of 999429 is about 999.7144592332. The cubic root of 999429 is about 99.9809630428.

The spelling of 999429 in words is "nine hundred ninety-nine thousand, four hundred twenty-nine".