844491961 has 8 divisors (see below), whose sum is σ = 852346880. Its totient is φ = 836656128.

The previous prime is 844491941. The next prime is 844491979. The reversal of 844491961 is 169194448.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 844491961 - 2⁵ = 844491929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (844491941) 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 7 ways as a sum of consecutive naturals, for example, 93340 + ... + 101986.

It is an arithmetic number, because the mean of its divisors is an integer number (106543360).

Almost surely, 2^844491961 is an apocalyptic number.

It is an amenable number.

844491961 is a deficient number, since it is larger than the sum of its proper divisors (7854919).

844491961 is a wasteful number, since it uses less digits than its factorization.

844491961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9543.

The product of its digits is 248832, while the sum is 46.

The square root of 844491961 is about 29060.1438571801. The cubic root of 844491961 is about 945.2176876888.

The spelling of 844491961 in words is "eight hundred forty-four million, four hundred ninety-one thousand, nine hundred sixty-one".