549807843 has 16 divisors (see below), whose sum is σ = 802851840. Its totient is φ = 332607264.

The previous prime is 549807809. The next prime is 549807857. The reversal of 549807843 is 348708945.

It is not a de Polignac number, because 549807843 - 2⁶ = 549807779 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 549807792 and 549807801.

It is not an unprimeable number, because it can be changed into a prime (549807803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117171 + ... + 121772.

It is an arithmetic number, because the mean of its divisors is an integer number (50178240).

Almost surely, 2^549807843 is an apocalyptic number.

549807843 is a deficient number, since it is larger than the sum of its proper divisors (253043997).

549807843 is a wasteful number, since it uses less digits than its factorization.

549807843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239018.

The product of its (nonzero) digits is 967680, while the sum is 48.

The square root of 549807843 is about 23447.9816402180. The cubic root of 549807843 is about 819.2258423243.

The spelling of 549807843 in words is "five hundred forty-nine million, eight hundred seven thousand, eight hundred forty-three".