844043961 has 4 divisors (see below), whose sum is σ = 1125391952. Its totient is φ = 562695972.

The previous prime is 844043933. The next prime is 844043987. The reversal of 844043961 is 169340448.

It is a happy number.

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 not a de Polignac number, because 844043961 - 2⁹ = 844043449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (844033961) 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, 140673991 + ... + 140673996.

It is an arithmetic number, because the mean of its divisors is an integer number (281347988).

Almost surely, 2^844043961 is an apocalyptic number.

It is an amenable number.

844043961 is a deficient number, since it is larger than the sum of its proper divisors (281347991).

844043961 is a wasteful number, since it uses less digits than its factorization.

844043961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281347990.

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 844043961 is about 29052.4346828282. The cubic root of 844043961 is about 945.0505132429.

The spelling of 844043961 in words is "eight hundred forty-four million, forty-three thousand, nine hundred sixty-one".