9729357894 has 12 divisors (see below), whose sum is σ = 21080275476. Its totient is φ = 3243119292.

The previous prime is 9729357893. The next prime is 9729357917. The reversal of 9729357894 is 4987539279.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9729357893) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 270259924 + ... + 270259959.

It is an arithmetic number, because the mean of its divisors is an integer number (1756689623).

Almost surely, 2^9729357894 is an apocalyptic number.

9729357894 is an abundant number, since it is smaller than the sum of its proper divisors (11350917582).

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

9729357894 is a wasteful number, since it uses less digits than its factorization.

9729357894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540519891 (or 540519888 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 63.

The square root of 9729357894 is about 98637.5075415027. The cubic root of 9729357894 is about 2134.8206401949.

The spelling of 9729357894 in words is "nine billion, seven hundred twenty-nine million, three hundred fifty-seven thousand, eight hundred ninety-four".