916243 has 4 divisors (see below), whose sum is σ = 918160. Its totient is φ = 914328.

The previous prime is 916219. The next prime is 916259. The reversal of 916243 is 342619.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 342619 = 151 ⋅2269.

It is a cyclic number.

It is not a de Polignac number, because 916243 - 2⁹ = 915731 is a prime.

It is a d-powerful number, because it can be written as 9⁴ + 1 + 2¹⁵ + 6⁷ + 4⁸ + 3¹² .

It is a Duffinian number.

916243 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (916213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 421 + ... + 1417.

It is an arithmetic number, because the mean of its divisors is an integer number (229540).

2⁹¹⁶²⁴³ is an apocalyptic number.

916243 is a deficient number, since it is larger than the sum of its proper divisors (1917).

916243 is an equidigital number, since it uses as much as digits as its factorization.

916243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916.

The product of its digits is 1296, while the sum is 25.

The square root of 916243 is about 957.2058294850. The cubic root of 916243 is about 97.1263101038.

The spelling of 916243 in words is "nine hundred sixteen thousand, two hundred forty-three".