6840940443 has 8 divisors (see below), whose sum is σ = 9601320000. Its totient is φ = 4320593928.

The previous prime is 6840940417. The next prime is 6840940453. The reversal of 6840940443 is 3440490486.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6840940443 - 2⁸ = 6840940187 is a prime.

It is a super-2 number, since 2×6840940443² = 93596932289346072498, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6840940395 and 6840940404.

It is not an unprimeable number, because it can be changed into a prime (6840940453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60008193 + ... + 60008306.

It is an arithmetic number, because the mean of its divisors is an integer number (1200165000).

Almost surely, 2^6840940443 is an apocalyptic number.

6840940443 is a deficient number, since it is larger than the sum of its proper divisors (2760379557).

6840940443 is a wasteful number, since it uses less digits than its factorization.

6840940443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120016521.

The product of its (nonzero) digits is 331776, while the sum is 42.

The square root of 6840940443 is about 82709.9778926340. The cubic root of 6840940443 is about 1898.3309851957.

The spelling of 6840940443 in words is "six billion, eight hundred forty million, nine hundred forty thousand, four hundred forty-three".