5491847449 has 9 divisors (see below), whose sum is σ = 6037389631. Its totient is φ = 4991847520.

The previous prime is 5491847437. The next prime is 5491847477. The reversal of 5491847449 is 9447481945.

It is a happy number.

The square root of 5491847449 is 74107.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2805291225 + 2686556224 = 52965^2 + 51832^2 .

It is not a de Polignac number, because 5491847449 - 2¹³ = 5491839257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5491847449.

It is not an unprimeable number, because it can be changed into a prime (5491847429) 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 8 ways as a sum of consecutive naturals, for example, 811809 + ... + 818545.

Almost surely, 2^5491847449 is an apocalyptic number.

5491847449 is the 74107-th square number.

5491847449 is the 37054-th centered octagonal number.

It is an amenable number.

5491847449 is a deficient number, since it is larger than the sum of its proper divisors (545542182).

5491847449 is an frugal number, since it uses more digits than its factorization.

5491847449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13496 (or 6748 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 55.

The cubic root of 5491847449 is about 1764.3015744126.

The spelling of 5491847449 in words is "five billion, four hundred ninety-one million, eight hundred forty-seven thousand, four hundred forty-nine".