9947459423 has 16 divisors (see below), whose sum is σ = 10992672000. Its totient is φ = 8926082880.

The previous prime is 9947459377. The next prime is 9947459437. The reversal of 9947459423 is 3249547499.

It is not a de Polignac number, because 9947459423 - 2³⁰ = 8873717599 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 (9947459453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 577940 + ... + 594902.

It is an arithmetic number, because the mean of its divisors is an integer number (687042000).

Almost surely, 2^9947459423 is an apocalyptic number.

9947459423 is a deficient number, since it is larger than the sum of its proper divisors (1045212577).

9947459423 is a wasteful number, since it uses less digits than its factorization.

9947459423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17662.

The product of its digits is 9797760, while the sum is 56.

The square root of 9947459423 is about 99736.9511414902. The cubic root of 9947459423 is about 2150.6548877920.

The spelling of 9947459423 in words is "nine billion, nine hundred forty-seven million, four hundred fifty-nine thousand, four hundred twenty-three".