815941 has 8 divisors (see below), whose sum is σ = 955584. Its totient is φ = 682080.

The previous prime is 815939. The next prime is 815953. The reversal of 815941 is 149518.

It is a happy number.

815941 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 815941 - 2¹ = 815939 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1135 + ... + 1708.

It is an arithmetic number, because the mean of its divisors is an integer number (119448).

2⁸¹⁵⁹⁴¹ is an apocalyptic number.

It is an amenable number.

815941 is a deficient number, since it is larger than the sum of its proper divisors (139643).

815941 is a wasteful number, since it uses less digits than its factorization.

815941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2891.

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

The square root of 815941 is about 903.2945256117. The cubic root of 815941 is about 93.4443223282. Note that the first 3 decimals are identical.

The spelling of 815941 in words is "eight hundred fifteen thousand, nine hundred forty-one".