841972813 has 12 divisors (see below), whose sum is σ = 940654204. Its totient is φ = 752875200.

The previous prime is 841972811. The next prime is 841972823. The reversal of 841972813 is 318279148.

It can be written as a sum of positive squares in 2 ways, for example, as 101969604 + 740003209 = 10098^2 + 27203^2 .

It is not a de Polignac number, because 841972813 - 2¹ = 841972811 is a prime.

It is a super-2 number, since 2×841972813² = 1417836435662265938, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 841972813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (841972811) 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 11 ways as a sum of consecutive naturals, for example, 49656 + ... + 64417.

Almost surely, 2^841972813 is an apocalyptic number.

It is an amenable number.

841972813 is a deficient number, since it is larger than the sum of its proper divisors (98681391).

841972813 is a wasteful number, since it uses less digits than its factorization.

841972813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114156 (or 114145 counting only the distinct ones).

The product of its digits is 96768, while the sum is 43.

The square root of 841972813 is about 29016.7677903656. The cubic root of 841972813 is about 944.2768795003.

The spelling of 841972813 in words is "eight hundred forty-one million, nine hundred seventy-two thousand, eight hundred thirteen".