217899483 has 16 divisors (see below), whose sum is σ = 297128736. Its totient is φ = 141989120.

The previous prime is 217899469. The next prime is 217899491. The reversal of 217899483 is 384998712.

It is not a de Polignac number, because 217899483 - 2⁶ = 217899419 is a prime.

It is a super-3 number, since 3×217899483³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (217899443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42241 + ... + 47117.

It is an arithmetic number, because the mean of its divisors is an integer number (18570546).

Almost surely, 2^217899483 is an apocalyptic number.

217899483 is a deficient number, since it is larger than the sum of its proper divisors (79229253).

217899483 is a wasteful number, since it uses less digits than its factorization.

217899483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5214.

The product of its digits is 870912, while the sum is 51.

The square root of 217899483 is about 14761.4187326286. The cubic root of 217899483 is about 601.7536500810.

The spelling of 217899483 in words is "two hundred seventeen million, eight hundred ninety-nine thousand, four hundred eighty-three".