549045399 has 32 divisors (see below), whose sum is σ = 859815936. Its totient is φ = 305134560.

The previous prime is 549045383. The next prime is 549045407. The reversal of 549045399 is 993540945.

It is not a de Polignac number, because 549045399 - 2⁴ = 549045383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549045359) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 163164 + ... + 166494.

It is an arithmetic number, because the mean of its divisors is an integer number (26869248).

Almost surely, 2^549045399 is an apocalyptic number.

549045399 is a deficient number, since it is larger than the sum of its proper divisors (310770537).

549045399 is a wasteful number, since it uses less digits than its factorization.

549045399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3555.

The product of its (nonzero) digits is 874800, while the sum is 48.

The square root of 549045399 is about 23431.7177987445. The cubic root of 549045399 is about 818.8469810029.

The spelling of 549045399 in words is "five hundred forty-nine million, forty-five thousand, three hundred ninety-nine".