841209813 has 16 divisors (see below), whose sum is σ = 1246795200. Its totient is φ = 560555280.

The previous prime is 841209767. The next prime is 841209883. The reversal of 841209813 is 318902148.

It is not a de Polignac number, because 841209813 - 2¹⁶ = 841144277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (841209883) 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 15 ways as a sum of consecutive naturals, for example, 69718 + ... + 80888.

It is an arithmetic number, because the mean of its divisors is an integer number (77924700).

Almost surely, 2^841209813 is an apocalyptic number.

It is an amenable number.

841209813 is a deficient number, since it is larger than the sum of its proper divisors (405585387).

841209813 is a wasteful number, since it uses less digits than its factorization.

841209813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13969 (or 13963 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 841209813 is about 29003.6172399237. The cubic root of 841209813 is about 943.9915571428.

The spelling of 841209813 in words is "eight hundred forty-one million, two hundred nine thousand, eight hundred thirteen".