549449731 has 8 divisors (see below), whose sum is σ = 555120720. Its totient is φ = 543793152.

The previous prime is 549449717. The next prime is 549449749. The reversal of 549449731 is 137944945.

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

It is a cyclic number.

It is not a de Polignac number, because 549449731 - 2⁵ = 549449699 is a prime.

It is a super-2 number, since 2×549449731² = 603790013791944722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (549449711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83736 + ... + 90058.

It is an arithmetic number, because the mean of its divisors is an integer number (69390090).

Almost surely, 2^549449731 is an apocalyptic number.

549449731 is a deficient number, since it is larger than the sum of its proper divisors (5670989).

549449731 is a wasteful number, since it uses less digits than its factorization.

549449731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7205.

The product of its digits is 544320, while the sum is 46.

The square root of 549449731 is about 23440.3440887714. The cubic root of 549449731 is about 819.0479387608.

It can be divided in two parts, 5494 and 49731, that added together give a square (55225 = 235²).

The spelling of 549449731 in words is "five hundred forty-nine million, four hundred forty-nine thousand, seven hundred thirty-one".