866812941 has 16 divisors (see below), whose sum is σ = 1289174400. Its totient is φ = 575622144.

The previous prime is 866812931. The next prime is 866812951. The reversal of 866812941 is 149218668.

It is an interprime number because it is at equal distance from previous prime (866812931) and next prime (866812951).

It is not a de Polignac number, because 866812941 - 2¹⁷ = 866681869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866812901) 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, 55521 + ... + 69398.

It is an arithmetic number, because the mean of its divisors is an integer number (80573400).

Almost surely, 2^866812941 is an apocalyptic number.

It is an amenable number.

866812941 is a deficient number, since it is larger than the sum of its proper divisors (422361459).

866812941 is a wasteful number, since it uses less digits than its factorization.

866812941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125185 (or 125179 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 866812941 is about 29441.6871289673. The cubic root of 866812941 is about 953.4731377470.

It can be divided in two parts, 8668 and 12941, that added together give a square (21609 = 147²).

The spelling of 866812941 in words is "eight hundred sixty-six million, eight hundred twelve thousand, nine hundred forty-one".