840941 has 2 divisors, whose sum is σ = 840942. Its totient is φ = 840940.

The previous prime is 840929. The next prime is 840943. The reversal of 840941 is 149048.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 792100 + 48841 = 890^2 + 221^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-840941 is a prime.

Together with 840943, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 840941.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (840943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420470 + 420471.

It is an arithmetic number, because the mean of its divisors is an integer number (420471).

2⁸⁴⁰⁹⁴¹ is an apocalyptic number.

It is an amenable number.

840941 is a deficient number, since it is larger than the sum of its proper divisors (1).

840941 is an equidigital number, since it uses as much as digits as its factorization.

840941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 840941 is about 917.0283528877. The cubic root of 840941 is about 94.3890993949.

Adding to 840941 its reverse (149048), we get a palindrome (989989).

The spelling of 840941 in words is "eight hundred forty thousand, nine hundred forty-one".