844245897 has 16 divisors (see below), whose sum is σ = 1228677120. Its totient is φ = 511379600.

The previous prime is 844245893. The next prime is 844245907. The reversal of 844245897 is 798542448.

It is a cyclic number.

It is not a de Polignac number, because 844245897 - 2² = 844245893 is a prime.

It is a super-2 number, since 2×844245897² = 1425502269202669218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (844245893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63604 + ... + 75722.

It is an arithmetic number, because the mean of its divisors is an integer number (76792320).

Almost surely, 2^844245897 is an apocalyptic number.

It is an amenable number.

844245897 is a deficient number, since it is larger than the sum of its proper divisors (384431223).

844245897 is a wasteful number, since it uses less digits than its factorization.

844245897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14244.

The product of its digits is 2580480, while the sum is 51.

The square root of 844245897 is about 29055.9098463634. The cubic root of 844245897 is about 945.1258744452.

The spelling of 844245897 in words is "eight hundred forty-four million, two hundred forty-five thousand, eight hundred ninety-seven".