549878436 has 24 divisors (see below), whose sum is σ = 1425611040. Its totient is φ = 183292776.

The previous prime is 549878419. The next prime is 549878443. The reversal of 549878436 is 634878945.

549878436 is a `hidden beast` number, since 54 + 98 + 78 + 436 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 2545626 + ... + 2545841.

It is an arithmetic number, because the mean of its divisors is an integer number (59400460).

Almost surely, 2^549878436 is an apocalyptic number.

It is an amenable number.

549878436 is an abundant number, since it is smaller than the sum of its proper divisors (875732604).

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

549878436 is a wasteful number, since it uses less digits than its factorization.

549878436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5091480 (or 5091472 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The square root of 549878436 is about 23449.4869027022. The cubic root of 549878436 is about 819.2609025340.

The spelling of 549878436 in words is "five hundred forty-nine million, eight hundred seventy-eight thousand, four hundred thirty-six".