861941 has 2 divisors, whose sum is σ = 861942. Its totient is φ = 861940.

The previous prime is 861937. The next prime is 861947. The reversal of 861941 is 149168.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 555025 + 306916 = 745^2 + 554^2 .

It is a cyclic number.

It is not a de Polignac number, because 861941 - 2² = 861937 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (861947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430970 + 430971.

It is an arithmetic number, because the mean of its divisors is an integer number (430971).

2⁸⁶¹⁹⁴¹ is an apocalyptic number.

It is an amenable number.

861941 is a deficient number, since it is larger than the sum of its proper divisors (1).

861941 is an equidigital number, since it uses as much as digits as its factorization.

861941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 29.

The square root of 861941 is about 928.4077767878. The cubic root of 861941 is about 95.1683441698.

The spelling of 861941 in words is "eight hundred sixty-one thousand, nine hundred forty-one".