549400019 has 8 divisors (see below), whose sum is σ = 628426848. Its totient is φ = 470508480.

The previous prime is 549400001. The next prime is 549400021. The reversal of 549400019 is 910004945.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-549400019 is a prime.

It is a super-3 number, since 3×549400019³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (549400039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24962 + ... + 41495.

It is an arithmetic number, because the mean of its divisors is an integer number (78553356).

Almost surely, 2^549400019 is an apocalyptic number.

549400019 is a deficient number, since it is larger than the sum of its proper divisors (79026829).

549400019 is a wasteful number, since it uses less digits than its factorization.

549400019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67645.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 549400019 is about 23439.2836707951. The cubic root of 549400019 is about 819.0232366289.

The spelling of 549400019 in words is "five hundred forty-nine million, four hundred thousand, nineteen".