549395899 has 4 divisors (see below), whose sum is σ = 591657136. Its totient is φ = 507134664.

The previous prime is 549395881. The next prime is 549395911. The reversal of 549395899 is 998593945.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 549395899 - 2⁵ = 549395867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (549395879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21130599 + ... + 21130624.

It is an arithmetic number, because the mean of its divisors is an integer number (147914284).

Almost surely, 2^549395899 is an apocalyptic number.

549395899 is a deficient number, since it is larger than the sum of its proper divisors (42261237).

549395899 is a wasteful number, since it uses less digits than its factorization.

549395899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42261236.

The product of its digits is 15746400, while the sum is 61.

The square root of 549395899 is about 23439.1957839854. The cubic root of 549395899 is about 819.0211893142.

The spelling of 549395899 in words is "five hundred forty-nine million, three hundred ninety-five thousand, eight hundred ninety-nine".