549729813 has 16 divisors (see below), whose sum is σ = 752484096. Its totient is φ = 356812800.

The previous prime is 549729811. The next prime is 549729821. The reversal of 549729813 is 318927945.

It is not a de Polignac number, because 549729813 - 2¹ = 549729811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549729811) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 17113 + ... + 37313.

It is an arithmetic number, because the mean of its divisors is an integer number (47030256).

Almost surely, 2^549729813 is an apocalyptic number.

It is an amenable number.

549729813 is a deficient number, since it is larger than the sum of its proper divisors (202754283).

549729813 is a wasteful number, since it uses less digits than its factorization.

549729813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20444.

The product of its digits is 544320, while the sum is 48.

The square root of 549729813 is about 23446.3176852998. The cubic root of 549729813 is about 819.1870850156.

The spelling of 549729813 in words is "five hundred forty-nine million, seven hundred twenty-nine thousand, eight hundred thirteen".