841591 has 4 divisors (see below), whose sum is σ = 847872. Its totient is φ = 835312.

The previous prime is 841573. The next prime is 841597. The reversal of 841591 is 195148.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 841591 - 2⁵ = 841559 is a prime.

It is a super-2 number, since 2×841591² = 1416550822562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (841597) 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, 2935 + ... + 3208.

It is an arithmetic number, because the mean of its divisors is an integer number (211968).

2⁸⁴¹⁵⁹¹ is an apocalyptic number.

841591 is a deficient number, since it is larger than the sum of its proper divisors (6281).

841591 is a wasteful number, since it uses less digits than its factorization.

841591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6280.

The product of its digits is 1440, while the sum is 28.

The square root of 841591 is about 917.3826900482. The cubic root of 841591 is about 94.4134122832.

The spelling of 841591 in words is "eight hundred forty-one thousand, five hundred ninety-one".