549140823 has 32 divisors (see below), whose sum is σ = 1014289920. Its totient is φ = 285266880.

The previous prime is 549140807. The next prime is 549140827. The reversal of 549140823 is 328041945.

It is not a de Polignac number, because 549140823 - 2⁴ = 549140807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549140827) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129990 + ... + 134147.

It is an arithmetic number, because the mean of its divisors is an integer number (31696560).

Almost surely, 2^549140823 is an apocalyptic number.

549140823 is a deficient number, since it is larger than the sum of its proper divisors (465149097).

549140823 is a wasteful number, since it uses less digits than its factorization.

549140823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264164 (or 264158 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 549140823 is about 23433.7539246276. The cubic root of 549140823 is about 818.8944167450.

The spelling of 549140823 in words is "five hundred forty-nine million, one hundred forty thousand, eight hundred twenty-three".