99424429 has 8 divisors (see below), whose sum is σ = 107161880. Its totient is φ = 91699776.

The previous prime is 99424417. The next prime is 99424453. The reversal of 99424429 is 92442499.

It can be written as a sum of positive squares in 4 ways, for example, as 4848804 + 94575625 = 2202^2 + 9725^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 99424429 - 2⁷ = 99424301 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 (99427429) 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, 18367 + ... + 23155.

It is an arithmetic number, because the mean of its divisors is an integer number (13395235).

Almost surely, 2^99424429 is an apocalyptic number.

It is an amenable number.

99424429 is a deficient number, since it is larger than the sum of its proper divisors (7737451).

99424429 is a wasteful number, since it uses less digits than its factorization.

99424429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6399.

The product of its digits is 186624, while the sum is 43.

The square root of 99424429 is about 9971.1799201499. The cubic root of 99424429 is about 463.2666480407.

The spelling of 99424429 in words is "ninety-nine million, four hundred twenty-four thousand, four hundred twenty-nine".