842444249 has 4 divisors (see below), whose sum is σ = 886783440. Its totient is φ = 798105060.

The previous prime is 842444233. The next prime is 842444293. The reversal of 842444249 is 942444248.

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 842444249 - 2⁴ = 842444233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (842444209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22169567 + ... + 22169604.

It is an arithmetic number, because the mean of its divisors is an integer number (221695860).

Almost surely, 2^842444249 is an apocalyptic number.

It is an amenable number.

842444249 is a deficient number, since it is larger than the sum of its proper divisors (44339191).

842444249 is a wasteful number, since it uses less digits than its factorization.

842444249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44339190.

The product of its digits is 294912, while the sum is 41.

The square root of 842444249 is about 29024.8901634442. The cubic root of 842444249 is about 944.4530859243.

Subtracting 842444249 from its reverse (942444248), we obtain a palindrome (99999999).

The spelling of 842444249 in words is "eight hundred forty-two million, four hundred forty-four thousand, two hundred forty-nine".