9999429 has 8 divisors (see below), whose sum is σ = 14544672. Its totient is φ = 6060240.

The previous prime is 9999419. The next prime is 9999433. The reversal of 9999429 is 9249999.

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

It is not a de Polignac number, because 9999429 - 2⁵ = 9999397 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999419) 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, 151474 + ... + 151539.

It is an arithmetic number, because the mean of its divisors is an integer number (1818084).

Almost surely, 2^9999429 is an apocalyptic number.

It is an amenable number.

9999429 is a deficient number, since it is larger than the sum of its proper divisors (4545243).

9999429 is a wasteful number, since it uses less digits than its factorization.

9999429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303027.

The product of its digits is 472392, while the sum is 51.

The square root of 9999429 is about 3162.1873758524. The cubic root of 9999429 is about 215.4393683178.

The spelling of 9999429 in words is "nine million, nine hundred ninety-nine thousand, four hundred twenty-nine".