9999434473 has 4 divisors (see below), whose sum is σ = 11427925120. Its totient is φ = 8570943828.

The previous prime is 9999434461. The next prime is 9999434503. The reversal of 9999434473 is 3744349999.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3744349999 = 13 ⋅288026923.

It is a cyclic number.

It is not a de Polignac number, because 9999434473 - 2¹⁷ = 9999303401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9999438473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 714245313 + ... + 714245326.

It is an arithmetic number, because the mean of its divisors is an integer number (2856981280).

Almost surely, 2^9999434473 is an apocalyptic number.

It is an amenable number.

9999434473 is a deficient number, since it is larger than the sum of its proper divisors (1428490647).

9999434473 is a wasteful number, since it uses less digits than its factorization.

9999434473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428490646.

The product of its digits is 26453952, while the sum is 61.

The square root of 9999434473 is about 99997.1723250213. The cubic root of 9999434473 is about 2154.3940762334.

The spelling of 9999434473 in words is "nine billion, nine hundred ninety-nine million, four hundred thirty-four thousand, four hundred seventy-three".