843442340 has 24 divisors (see below), whose sum is σ = 1907477880. Its totient is φ = 311424768.

The previous prime is 843442339. The next prime is 843442367. The reversal of 843442340 is 43244348.

It can be written as a sum of positive squares in 4 ways, for example, as 3833764 + 839608576 = 1958^2 + 28976^2 .

It is a super-2 number, since 2×843442340² = 1422789961809351200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 843442297 and 843442306.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1621745 + ... + 1622264.

It is an arithmetic number, because the mean of its divisors is an integer number (79478245).

Almost surely, 2^843442340 is an apocalyptic number.

It is an amenable number.

843442340 is an abundant number, since it is smaller than the sum of its proper divisors (1064035540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

843442340 is a wasteful number, since it uses less digits than its factorization.

843442340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3244031 (or 3244029 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

The square root of 843442340 is about 29042.0787823461. The cubic root of 843442340 is about 944.8259209223.

Adding to 843442340 its reverse (43244348), we get a palindrome (886686688).

The spelling of 843442340 in words is "eight hundred forty-three million, four hundred forty-two thousand, three hundred forty".