843474440 has 16 divisors (see below), whose sum is σ = 1897817580. Its totient is φ = 337389760.

The previous prime is 843474439. The next prime is 843474451. The reversal of 843474440 is 44474348.

It can be written as a sum of positive squares in 2 ways, for example, as 751966084 + 91508356 = 27422^2 + 9566^2 .

It is a super-2 number, since 2×843474440² = 1422898261866627200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 843474394 and 843474403.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 10543391 + ... + 10543470.

Almost surely, 2^843474440 is an apocalyptic number.

It is an amenable number.

843474440 is an abundant number, since it is smaller than the sum of its proper divisors (1054343140).

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

843474440 is a wasteful number, since it uses less digits than its factorization.

843474440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21086872 (or 21086868 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 38.

The square root of 843474440 is about 29042.6314234781. The cubic root of 843474440 is about 944.8379069332.

The spelling of 843474440 in words is "eight hundred forty-three million, four hundred seventy-four thousand, four hundred forty".