549385990 has 16 divisors (see below), whose sum is σ = 1015622352. Its totient is φ = 213814944.

The previous prime is 549385943. The next prime is 549386003. The reversal of 549385990 is 99583945.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 742044 + ... + 742783.

It is an arithmetic number, because the mean of its divisors is an integer number (63476397).

Almost surely, 2^549385990 is an apocalyptic number.

549385990 is a deficient number, since it is larger than the sum of its proper divisors (466236362).

549385990 is a wasteful number, since it uses less digits than its factorization.

549385990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1484871.

The product of its (nonzero) digits is 1749600, while the sum is 52.

The square root of 549385990 is about 23438.9844063261. The cubic root of 549385990 is about 819.0162652818.

The spelling of 549385990 in words is "five hundred forty-nine million, three hundred eighty-five thousand, nine hundred ninety".