9159729 has 8 divisors (see below), whose sum is σ = 12855840. Its totient is φ = 5785056.

The previous prime is 9159659. The next prime is 9159739. The reversal of 9159729 is 9279519.

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

It is not a de Polignac number, because 9159729 - 2⁹ = 9159217 is a prime.

It is a Smith number, since the sum of its digits (42) 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 (9159739) 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, 80292 + ... + 80405.

It is an arithmetic number, because the mean of its divisors is an integer number (1606980).

Almost surely, 2^9159729 is an apocalyptic number.

It is an amenable number.

9159729 is a deficient number, since it is larger than the sum of its proper divisors (3696111).

9159729 is a wasteful number, since it uses less digits than its factorization.

9159729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160719.

The product of its digits is 51030, while the sum is 42.

The square root of 9159729 is about 3026.5044192930. The cubic root of 9159729 is about 209.2317278987.

It can be divided in two parts, 915972 and 9, that added together give a triangular number (915981 = T₁₃₅₃).

The spelling of 9159729 in words is "nine million, one hundred fifty-nine thousand, seven hundred twenty-nine".