9729998613 has 16 divisors (see below), whose sum is σ = 14879808000. Its totient is φ = 6277417920.

The previous prime is 9729998573. The next prime is 9729998639. The reversal of 9729998613 is 3168999279.

It is a happy number.

9729998613 is a `hidden beast` number, since 9 + 7 + 2 + 9 + 9 + 9 + 8 + 613 = 666.

It is not a de Polignac number, because 9729998613 - 2⁹ = 9729998101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9729998653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5811588 + ... + 5813261.

It is an arithmetic number, because the mean of its divisors is an integer number (929988000).

Almost surely, 2^9729998613 is an apocalyptic number.

9729998613 is a gapful number since it is divisible by the number (93) formed by its first and last digit.

It is an amenable number.

9729998613 is a deficient number, since it is larger than the sum of its proper divisors (5149809387).

9729998613 is a wasteful number, since it uses less digits than its factorization.

9729998613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11624889 (or 11624883 counting only the distinct ones).

The product of its digits is 13226976, while the sum is 63.

The square root of 9729998613 is about 98640.7553346993. The cubic root of 9729998613 is about 2134.8675014622.

The spelling of 9729998613 in words is "nine billion, seven hundred twenty-nine million, nine hundred ninety-eight thousand, six hundred thirteen".