9855928047 has 32 divisors (see below), whose sum is σ = 15431933440. Its totient is φ = 5478036480.

The previous prime is 9855928003. The next prime is 9855928073. The reversal of 9855928047 is 7408295589.

It is a happy number.

It is not a de Polignac number, because 9855928047 - 2¹⁰ = 9855927023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9855924047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 194979 + ... + 240267.

It is an arithmetic number, because the mean of its divisors is an integer number (482247920).

Almost surely, 2^9855928047 is an apocalyptic number.

9855928047 is a deficient number, since it is larger than the sum of its proper divisors (5576005393).

9855928047 is a wasteful number, since it uses less digits than its factorization.

9855928047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45583.

The product of its (nonzero) digits is 7257600, while the sum is 57.

The square root of 9855928047 is about 99277.0267836421. The cubic root of 9855928047 is about 2144.0381468967.

The spelling of 9855928047 in words is "nine billion, eight hundred fifty-five million, nine hundred twenty-eight thousand, forty-seven".