5549643949 has 8 divisors (see below), whose sum is σ = 5708308320. Its totient is φ = 5391436176.

The previous prime is 5549643919. The next prime is 5549643997. The reversal of 5549643949 is 9493469455.

It is a happy number.

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 5549643949 - 2²³ = 5541255341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5549643893 and 5549643902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5549643919) 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, 89419 + ... + 138184.

It is an arithmetic number, because the mean of its divisors is an integer number (713538540).

Almost surely, 2^5549643949 is an apocalyptic number.

It is an amenable number.

5549643949 is a deficient number, since it is larger than the sum of its proper divisors (158664371).

5549643949 is a wasteful number, since it uses less digits than its factorization.

5549643949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228299.

The product of its digits is 20995200, while the sum is 58.

The square root of 5549643949 is about 74495.9324325832. The cubic root of 5549643949 is about 1770.4691904152.

The spelling of 5549643949 in words is "five billion, five hundred forty-nine million, six hundred forty-three thousand, nine hundred forty-nine".