549894742 has 4 divisors (see below), whose sum is σ = 824842116. Its totient is φ = 274947370.

The previous prime is 549894731. The next prime is 549894749. The reversal of 549894742 is 247498945.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 549894742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549894749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137473684 + ... + 137473687.

It is an arithmetic number, because the mean of its divisors is an integer number (206210529).

Almost surely, 2^549894742 is an apocalyptic number.

549894742 is a deficient number, since it is larger than the sum of its proper divisors (274947374).

549894742 is a wasteful number, since it uses less digits than its factorization.

549894742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274947373.

The product of its digits is 2903040, while the sum is 52.

The square root of 549894742 is about 23449.8345836383. The cubic root of 549894742 is about 819.2690005277.

The spelling of 549894742 in words is "five hundred forty-nine million, eight hundred ninety-four thousand, seven hundred forty-two".