844061261 has 4 divisors (see below), whose sum is σ = 851949792. Its totient is φ = 836172732.

The previous prime is 844061227. The next prime is 844061287. The reversal of 844061261 is 162160448.

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 a de Polignac number, because none of the positive numbers 2^k-844061261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (844061161) 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, 3944105 + ... + 3944318.

It is an arithmetic number, because the mean of its divisors is an integer number (212987448).

Almost surely, 2^844061261 is an apocalyptic number.

It is an amenable number.

844061261 is a deficient number, since it is larger than the sum of its proper divisors (7888531).

844061261 is a wasteful number, since it uses less digits than its factorization.

844061261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7888530.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 844061261 is about 29052.7324188277. The cubic root of 844061261 is about 945.0569699611.

The spelling of 844061261 in words is "eight hundred forty-four million, sixty-one thousand, two hundred sixty-one".