9960729 has 8 divisors (see below), whose sum is σ = 13301472. Its totient is φ = 6630240.

The previous prime is 9960719. The next prime is 9960761. The reversal of 9960729 is 9270699.

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

It is not a de Polignac number, because 9960729 - 2⁸ = 9960473 is a prime.

It is a super-2 number, since 2×9960729² = 198432244422882, which contains 22 as substring.

9960729 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9960719) 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, 102 + ... + 4464.

It is an arithmetic number, because the mean of its divisors is an integer number (1662684).

Almost surely, 2^9960729 is an apocalyptic number.

It is an amenable number.

9960729 is a deficient number, since it is larger than the sum of its proper divisors (3340743).

9960729 is a wasteful number, since it uses less digits than its factorization.

9960729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5127.

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 9960729 is about 3156.0622617433. The cubic root of 9960729 is about 215.1610763362.

It can be divided in two parts, 9 and 960729, that multiplied together give a triangular number (8646561 = T₄₁₅₈).

The spelling of 9960729 in words is "nine million, nine hundred sixty thousand, seven hundred twenty-nine".