219441090 has 32 divisors (see below), whose sum is σ = 574537536. Its totient is φ = 53197760.

The previous prime is 219441077. The next prime is 219441121. The reversal of 219441090 is 90144912.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 332157 + ... + 332816.

It is an arithmetic number, because the mean of its divisors is an integer number (17954298).

Almost surely, 2^219441090 is an apocalyptic number.

219441090 is an abundant number, since it is smaller than the sum of its proper divisors (355096446).

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

219441090 is a wasteful number, since it uses less digits than its factorization.

219441090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664994.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 219441090 is about 14813.5441404142. The cubic root of 219441090 is about 603.1694228960.

The spelling of 219441090 in words is "two hundred nineteen million, four hundred forty-one thousand, ninety".