844242447 has 16 divisors (see below), whose sum is σ = 1185563520. Its totient is φ = 532908000.

The previous prime is 844242433. The next prime is 844242449. The reversal of 844242447 is 744242448.

It is not a de Polignac number, because 844242447 - 2⁶ = 844242383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (844242449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146572 + ... + 152222.

It is an arithmetic number, because the mean of its divisors is an integer number (74097720).

Almost surely, 2^844242447 is an apocalyptic number.

844242447 is a deficient number, since it is larger than the sum of its proper divisors (341321073).

844242447 is a wasteful number, since it uses less digits than its factorization.

844242447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8294.

The product of its digits is 229376, while the sum is 39.

The square root of 844242447 is about 29055.8504780018. The cubic root of 844242447 is about 945.1245870285.

Subtracting from 844242447 its reverse (744242448), we obtain a palindrome (99999999).

The spelling of 844242447 in words is "eight hundred forty-four million, two hundred forty-two thousand, four hundred forty-seven".