549997889 has 16 divisors (see below), whose sum is σ = 670032000. Its totient is φ = 440703744.

The previous prime is 549997843. The next prime is 549997891. The reversal of 549997889 is 988799945.

It is a cyclic number.

It is not a de Polignac number, because 549997889 - 2²⁸ = 281562433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (549993889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2222 + ... + 33240.

It is an arithmetic number, because the mean of its divisors is an integer number (41877000).

Almost surely, 2^549997889 is an apocalyptic number.

It is an amenable number.

549997889 is a deficient number, since it is larger than the sum of its proper divisors (120034111).

549997889 is a wasteful number, since it uses less digits than its factorization.

549997889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31192.

The product of its digits is 58786560, while the sum is 68.

The square root of 549997889 is about 23452.0337924027. The cubic root of 549997889 is about 819.3202223646.

The spelling of 549997889 in words is "five hundred forty-nine million, nine hundred ninety-seven thousand, eight hundred eighty-nine".