549388469 has 8 divisors (see below), whose sum is σ = 644842368. Its totient is φ = 458177040.

The previous prime is 549388457. The next prime is 549388481. The reversal of 549388469 is 964883945.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (549388457) and next prime (549388481).

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 549388469 - 2⁴ = 549388453 is a prime.

It is a super-2 number, since 2×549388469² = 603655379740327922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549388429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1060337 + ... + 1060854.

It is an arithmetic number, because the mean of its divisors is an integer number (80605296).

Almost surely, 2^549388469 is an apocalyptic number.

It is an amenable number.

549388469 is a deficient number, since it is larger than the sum of its proper divisors (95453899).

549388469 is a wasteful number, since it uses less digits than its factorization.

549388469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121235.

The product of its digits is 7464960, while the sum is 56.

The square root of 549388469 is about 23439.0372882506. The cubic root of 549388469 is about 819.0174971651.

The spelling of 549388469 in words is "five hundred forty-nine million, three hundred eighty-eight thousand, four hundred sixty-nine".