549059691 has 8 divisors (see below), whose sum is σ = 740900160. Its totient is φ = 361629512.

The previous prime is 549059681. The next prime is 549059711. The reversal of 549059691 is 196950945.

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 549059691 - 2⁶ = 549059627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 549059691.

It is not an unprimeable number, because it can be changed into a prime (549059671) 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 7 ways as a sum of consecutive naturals, for example, 1102281 + ... + 1102778.

It is an arithmetic number, because the mean of its divisors is an integer number (92612520).

Almost surely, 2^549059691 is an apocalyptic number.

549059691 is a deficient number, since it is larger than the sum of its proper divisors (191840469).

549059691 is a wasteful number, since it uses less digits than its factorization.

549059691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2205145.

The product of its (nonzero) digits is 437400, while the sum is 48.

The square root of 549059691 is about 23432.0227679985. The cubic root of 549059691 is about 818.8540859767.

The spelling of 549059691 in words is "five hundred forty-nine million, fifty-nine thousand, six hundred ninety-one".