844299213 has 4 divisors (see below), whose sum is σ = 1125732288. Its totient is φ = 562866140.

The previous prime is 844299199. The next prime is 844299221. The reversal of 844299213 is 312992448.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 844299213 - 2²⁰ = 843250637 is a prime.

It is a super-2 number, since 2×844299213² = 1425682322144838738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (844299293) 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, 140716533 + ... + 140716538.

It is an arithmetic number, because the mean of its divisors is an integer number (281433072).

Almost surely, 2^844299213 is an apocalyptic number.

It is an amenable number.

844299213 is a deficient number, since it is larger than the sum of its proper divisors (281433075).

844299213 is a wasteful number, since it uses less digits than its factorization.

844299213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281433074.

The product of its digits is 124416, while the sum is 42.

The square root of 844299213 is about 29056.8273044391. The cubic root of 844299213 is about 945.1457696244.

The spelling of 844299213 in words is "eight hundred forty-four million, two hundred ninety-nine thousand, two hundred thirteen".