549744194 has 4 divisors (see below), whose sum is σ = 824616294. Its totient is φ = 274872096.

The previous prime is 549744163. The next prime is 549744199. The reversal of 549744194 is 491447945.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 491447945 = 5 ⋅98289589.

It can be written as a sum of positive squares in only one way, i.e., 351075169 + 198669025 = 18737^2 + 14095^2 .

It is not an unprimeable number, because it can be changed into a prime (549744199) 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 as a sum of consecutive naturals, namely, 137436047 + ... + 137436050.

Almost surely, 2^549744194 is an apocalyptic number.

549744194 is a deficient number, since it is larger than the sum of its proper divisors (274872100).

549744194 is a wasteful number, since it uses less digits than its factorization.

549744194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274872099.

The product of its digits is 725760, while the sum is 47.

The square root of 549744194 is about 23446.6243625815. The cubic root of 549744194 is about 819.1942282985.

The spelling of 549744194 in words is "five hundred forty-nine million, seven hundred forty-four thousand, one hundred ninety-four".