9999760 has 40 divisors (see below), whose sum is σ = 23391360.
Its totient is φ = 3975552.
The previous prime is 9999749. The next prime is 9999761. The reversal of 9999760 is 679999.
It is a happy number.
It is a tau number, because it is divible by the number of its divisors (40).
It is an Ulam number.
It is a nialpdrome in base 10.
It is not an unprimeable number, because it can be changed into a prime (9999761) 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, 18859 + ... + 19381.
It is an arithmetic number, because the mean of its divisors is an integer number (584784).
Almost surely, 29999760 is an apocalyptic number.
It is an amenable number.
9999760 is an abundant number, since it is smaller than the sum of its proper divisors (13391600).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
9999760 is a wasteful number, since it uses less digits than its factorization.
9999760 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 775 (or 769 counting only the distinct ones).
The product of its (nonzero) digits is 275562, while the sum is 49.
The square root of 9999760 is about 3162.2397126088.
The cubic root of 9999760 is about 215.4417454416.
The spelling of 9999760 in words is "nine million, nine hundred ninety-nine thousand, seven hundred sixty".