1161329 has 8 divisors (see below), whose sum is σ = 1260840. Its totient is φ = 1063296.

The previous prime is 1161317. The next prime is 1161331. The reversal of 1161329 is 9231611.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10000 + 1151329 = 100^2 + 1073^2 .

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

It is not a de Polignac number, because 1161329 - 2⁴ = 1161313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161529) 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, 1757 + ... + 2325.

It is an arithmetic number, because the mean of its divisors is an integer number (157605).

2^1161329 is an apocalyptic number.

It is an amenable number.

1161329 is a deficient number, since it is larger than the sum of its proper divisors (99511).

1161329 is a wasteful number, since it uses less digits than its factorization.

1161329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739.

The product of its digits is 324, while the sum is 23.

The square root of 1161329 is about 1077.6497575743. The cubic root of 1161329 is about 105.1118686773. Note that the first 3 decimals are identical.

The spelling of 1161329 in words is "one million, one hundred sixty-one thousand, three hundred twenty-nine".