840324841 has 8 divisors (see below), whose sum is σ = 891876744. Its totient is φ = 789008640.

The previous prime is 840324833. The next prime is 840324847. The reversal of 840324841 is 148423048.

It is a happy number.

840324841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 123210000 + 717114841 = 11100^2 + 26779^2 .

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 840324841 - 2³ = 840324833 is a prime.

It is a super-2 number, since 2×840324841² = 1412291676803350562, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 840324797 and 840324806.

It is not an unprimeable number, because it can be changed into a prime (840324847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51550 + ... + 65863.

It is an arithmetic number, because the mean of its divisors is an integer number (111484593).

Almost surely, 2^840324841 is an apocalyptic number.

It is an amenable number.

840324841 is a deficient number, since it is larger than the sum of its proper divisors (51551903).

840324841 is a wasteful number, since it uses less digits than its factorization.

840324841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117851.

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 840324841 is about 28988.3569903505. The cubic root of 840324841 is about 943.6604074066.

Adding to 840324841 its reverse (148423048), we get a palindrome (988747889).

The spelling of 840324841 in words is "eight hundred forty million, three hundred twenty-four thousand, eight hundred forty-one".