1159491 has 8 divisors (see below), whose sum is σ = 1551040. Its totient is φ = 770472.

The previous prime is 1159489. The next prime is 1159517. The reversal of 1159491 is 1949511.

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

It is not a de Polignac number, because 1159491 - 2¹ = 1159489 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (1159421) 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, 1200 + ... + 1938.

It is an arithmetic number, because the mean of its divisors is an integer number (193880).

2^1159491 is an apocalyptic number.

1159491 is a deficient number, since it is larger than the sum of its proper divisors (391549).

1159491 is an equidigital number, since it uses as much as digits as its factorization.

1159491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265.

The product of its digits is 1620, while the sum is 30.

The square root of 1159491 is about 1076.7966381820. The cubic root of 1159491 is about 105.0563869473.

The spelling of 1159491 in words is "one million, one hundred fifty-nine thousand, four hundred ninety-one".