2217389998 has 4 divisors (see below), whose sum is σ = 3326085000. Its totient is φ = 1108694998.

The previous prime is 2217389981. The next prime is 2217390013. The reversal of 2217389998 is 8999837122.

2217389998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554347498 + ... + 554347501.

It is an arithmetic number, because the mean of its divisors is an integer number (831521250).

Almost surely, 2^2217389998 is an apocalyptic number.

2217389998 is a deficient number, since it is larger than the sum of its proper divisors (1108695002).

2217389998 is a wasteful number, since it uses less digits than its factorization.

2217389998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108695001.

The product of its digits is 3919104, while the sum is 58.

The square root of 2217389998 is about 47089.1707083486. The cubic root of 2217389998 is about 1304.0093180454.

The spelling of 2217389998 in words is "two billion, two hundred seventeen million, three hundred eighty-nine thousand, nine hundred ninety-eight".