9913038729 has 16 divisors (see below), whose sum is σ = 14444879040. Its totient is φ = 5997104960.

The previous prime is 9913038727. The next prime is 9913038731. The reversal of 9913038729 is 9278303199.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9913038727) and next prime (9913038731).

It is not a de Polignac number, because 9913038729 - 2¹ = 9913038727 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (9913038727) 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, 251274 + ... + 288035.

It is an arithmetic number, because the mean of its divisors is an integer number (902804940).

Almost surely, 2^9913038729 is an apocalyptic number.

It is an amenable number.

9913038729 is a deficient number, since it is larger than the sum of its proper divisors (4531840311).

9913038729 is a wasteful number, since it uses less digits than its factorization.

9913038729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539880.

The product of its (nonzero) digits is 734832, while the sum is 51.

The square root of 9913038729 is about 99564.2442295426. The cubic root of 9913038729 is about 2148.1714200988.

The spelling of 9913038729 in words is "nine billion, nine hundred thirteen million, thirty-eight thousand, seven hundred twenty-nine".