9728959905 has 48 divisors (see below), whose sum is σ = 19742696064. Its totient is φ = 4339042560.

The previous prime is 9728959897. The next prime is 9728959943. The reversal of 9728959905 is 5099598279.

It is not a de Polignac number, because 9728959905 - 2³ = 9728959897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 363739 + ... + 389568.

It is an arithmetic number, because the mean of its divisors is an integer number (411306168).

Almost surely, 2^9728959905 is an apocalyptic number.

It is an amenable number.

9728959905 is an abundant number, since it is smaller than the sum of its proper divisors (10013736159).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9728959905 is a wasteful number, since it uses less digits than its factorization.

9728959905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753366 (or 753363 counting only the distinct ones).

The product of its (nonzero) digits is 18370800, while the sum is 63.

The square root of 9728959905 is about 98635.4900885072. The cubic root of 9728959905 is about 2134.7915308153.

The spelling of 9728959905 in words is "nine billion, seven hundred twenty-eight million, nine hundred fifty-nine thousand, nine hundred five".