216498943 has 12 divisors (see below), whose sum is σ = 223075944. Its totient is φ = 210084000.

The previous prime is 216498941. The next prime is 216498959. The reversal of 216498943 is 349894612.

It is not a de Polignac number, because 216498943 - 2¹ = 216498941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216498893 and 216498902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216498941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 308493 + ... + 309193.

It is an arithmetic number, because the mean of its divisors is an integer number (18589662).

Almost surely, 2^216498943 is an apocalyptic number.

216498943 is a deficient number, since it is larger than the sum of its proper divisors (6577001).

216498943 is an frugal number, since it uses more digits than its factorization.

216498943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906 (or 845 counting only the distinct ones).

The product of its digits is 373248, while the sum is 46.

The square root of 216498943 is about 14713.9030511962. The cubic root of 216498943 is about 600.4616289993.

The spelling of 216498943 in words is "two hundred sixteen million, four hundred ninety-eight thousand, nine hundred forty-three".