291049 has 4 divisors (see below), whose sum is σ = 317520. Its totient is φ = 264580.

The previous prime is 291043. The next prime is 291077. The reversal of 291049 is 940192.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 291049 - 2³ = 291041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (291041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13219 + ... + 13240.

It is an arithmetic number, because the mean of its divisors is an integer number (79380).

2²⁹¹⁰⁴⁹ is an apocalyptic number.

It is an amenable number.

291049 is a deficient number, since it is larger than the sum of its proper divisors (26471).

291049 is a wasteful number, since it uses less digits than its factorization.

291049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26470.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 291049 is about 539.4895735786. The cubic root of 291049 is about 66.2707731227.

The spelling of 291049 in words is "two hundred ninety-one thousand, forty-nine".