843654380 has 12 divisors (see below), whose sum is σ = 1771674240. Its totient is φ = 337461744.

The previous prime is 843654373. The next prime is 843654391. The reversal of 843654380 is 83456348.

It is a happy number.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 21091340 + ... + 21091379.

It is an arithmetic number, because the mean of its divisors is an integer number (147639520).

Almost surely, 2^843654380 is an apocalyptic number.

It is an amenable number.

843654380 is an abundant number, since it is smaller than the sum of its proper divisors (928019860).

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

843654380 is a wasteful number, since it uses less digits than its factorization.

843654380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42182728 (or 42182726 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 41.

The square root of 843654380 is about 29045.7291180648. The cubic root of 843654380 is about 944.9050901761.

The spelling of 843654380 in words is "eight hundred forty-three million, six hundred fifty-four thousand, three hundred eighty".