843868261 has 8 divisors (see below), whose sum is σ = 890352000. Its totient is φ = 797591520.

The previous prime is 843868237. The next prime is 843868271. The reversal of 843868261 is 162868348.

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 843868261 - 2⁷ = 843868133 is a prime.

It is a super-2 number, since 2×843868261² = 1424227283846328242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (843868271) 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 7 ways as a sum of consecutive naturals, for example, 43336 + ... + 59713.

It is an arithmetic number, because the mean of its divisors is an integer number (111294000).

Almost surely, 2^843868261 is an apocalyptic number.

It is an amenable number.

843868261 is a deficient number, since it is larger than the sum of its proper divisors (46483739).

843868261 is a wasteful number, since it uses less digits than its factorization.

843868261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103499.

The product of its digits is 442368, while the sum is 46.

The square root of 843868261 is about 29049.4106824906. The cubic root of 843868261 is about 944.9849333656.

The spelling of 843868261 in words is "eight hundred forty-three million, eight hundred sixty-eight thousand, two hundred sixty-one".