549445398 has 16 divisors (see below), whose sum is σ = 1103072256. Its totient is φ = 182451560.

The previous prime is 549445373. The next prime is 549445399. The reversal of 549445398 is 893544945.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 549445398.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549445399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172518 + ... + 175673.

It is an arithmetic number, because the mean of its divisors is an integer number (68942016).

Almost surely, 2^549445398 is an apocalyptic number.

549445398 is an abundant number, since it is smaller than the sum of its proper divisors (553626858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

549445398 is a wasteful number, since it uses less digits than its factorization.

549445398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348459.

The product of its digits is 3110400, while the sum is 51.

The square root of 549445398 is about 23440.2516624715. The cubic root of 549445398 is about 819.0457857315.

The spelling of 549445398 in words is "five hundred forty-nine million, four hundred forty-five thousand, three hundred ninety-eight".