1160391 has 8 divisors (see below), whose sum is σ = 1556464. Its totient is φ = 768960.

The previous prime is 1160371. The next prime is 1160407. The reversal of 1160391 is 1930611.

It is a happy number.

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

It is not a de Polignac number, because 1160391 - 2⁵ = 1160359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1160351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 526 + ... + 1611.

It is an arithmetic number, because the mean of its divisors is an integer number (194558).

2^1160391 is an apocalyptic number.

1160391 is a deficient number, since it is larger than the sum of its proper divisors (396073).

1160391 is a wasteful number, since it uses less digits than its factorization.

1160391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2321.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 1160391 is about 1077.2144633266. The cubic root of 1160391 is about 105.0835615999.

It can be divided in two parts, 1160 and 391, that added together give a palindrome (1551).

The spelling of 1160391 in words is "one million, one hundred sixty thousand, three hundred ninety-one".