1291359 has 4 divisors (see below), whose sum is σ = 1721816. Its totient is φ = 860904.

The previous prime is 1291357. The next prime is 1291369. The reversal of 1291359 is 9531921.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1291359 - 2¹ = 1291357 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1291357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215224 + ... + 215229.

It is an arithmetic number, because the mean of its divisors is an integer number (430454).

2^1291359 is an apocalyptic number.

1291359 is a deficient number, since it is larger than the sum of its proper divisors (430457).

1291359 is an equidigital number, since it uses as much as digits as its factorization.

1291359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430456.

The product of its digits is 2430, while the sum is 30.

The square root of 1291359 is about 1136.3797780672. The cubic root of 1291359 is about 108.8969370623.

The spelling of 1291359 in words is "one million, two hundred ninety-one thousand, three hundred fifty-nine".