9729280842 has 8 divisors (see below), whose sum is σ = 19458561696. Its totient is φ = 3243093612.

The previous prime is 9729280831. The next prime is 9729280867. The reversal of 9729280842 is 2480829279.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

9729280842 is an admirable number.

It is a super-3 number, since 3×9729280842³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810773398 + ... + 810773409.

It is an arithmetic number, because the mean of its divisors is an integer number (2432320212).

Almost surely, 2^9729280842 is an apocalyptic number.

9729280842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

9729280842 is a wasteful number, since it uses less digits than its factorization.

9729280842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621546812.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 9729280842 is about 98637.1169590839. The cubic root of 9729280842 is about 2134.8150045837.

The spelling of 9729280842 in words is "nine billion, seven hundred twenty-nine million, two hundred eighty thousand, eight hundred forty-two".