212898239 has 4 divisors (see below), whose sum is σ = 213007056. Its totient is φ = 212789424.

The previous prime is 212898233. The next prime is 212898247. The reversal of 212898239 is 932898212.

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

It is a cyclic number.

It is not a de Polignac number, because 212898239 - 2⁴ = 212898223 is a prime.

It is a super-2 number, since 2×212898239² = 90651320338602242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212898239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212898233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51419 + ... + 55404.

It is an arithmetic number, because the mean of its divisors is an integer number (53251764).

Almost surely, 2^212898239 is an apocalyptic number.

212898239 is a deficient number, since it is larger than the sum of its proper divisors (108817).

212898239 is a wasteful number, since it uses less digits than its factorization.

212898239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108816.

The product of its digits is 124416, while the sum is 44.

The square root of 212898239 is about 14591.0328284190. The cubic root of 212898239 is about 597.1141410244.

The spelling of 212898239 in words is "two hundred twelve million, eight hundred ninety-eight thousand, two hundred thirty-nine".