857941 has 6 divisors (see below), whose sum is σ = 998070. Its totient is φ = 735336.

The previous prime is 857929. The next prime is 857951. The reversal of 857941 is 149758.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 461041 + 396900 = 679^2 + 630^2 .

It is a de Polignac number, because none of the positive numbers 2^k-857941 is a prime.

It is a Duffinian number.

857941 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 857897 and 857906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8706 + ... + 8803.

It is an arithmetic number, because the mean of its divisors is an integer number (166345).

2⁸⁵⁷⁹⁴¹ is an apocalyptic number.

It is an amenable number.

857941 is a deficient number, since it is larger than the sum of its proper divisors (140129).

857941 is a wasteful number, since it uses less digits than its factorization.

857941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17523 (or 17516 counting only the distinct ones).

The product of its digits is 10080, while the sum is 34.

The square root of 857941 is about 926.2510458834. The cubic root of 857941 is about 95.0209002953.

The spelling of 857941 in words is "eight hundred fifty-seven thousand, nine hundred forty-one".