216449084 has 6 divisors (see below), whose sum is σ = 378785904. Its totient is φ = 108224540.

The previous prime is 216449081. The next prime is 216449087. The reversal of 216449084 is 480944612.

It is an interprime number because it is at equal distance from previous prime (216449081) and next prime (216449087).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216449081) by changing a digit.

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 as a sum of consecutive naturals, namely, 27056132 + ... + 27056139.

It is an arithmetic number, because the mean of its divisors is an integer number (63130984).

Almost surely, 2^216449084 is an apocalyptic number.

It is an amenable number.

216449084 is a deficient number, since it is larger than the sum of its proper divisors (162336820).

216449084 is a wasteful number, since it uses less digits than its factorization.

216449084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54112275 (or 54112273 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 216449084 is about 14712.2086717121. The cubic root of 216449084 is about 600.4155306758.

The spelling of 216449084 in words is "two hundred sixteen million, four hundred forty-nine thousand, eighty-four".