7840843349 has 8 divisors (see below), whose sum is σ = 7966390080. Its totient is φ = 7715786976.

The previous prime is 7840843337. The next prime is 7840843363. The reversal of 7840843349 is 9433480487.

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

It is not a de Polignac number, because 7840843349 - 2⁴ = 7840843333 is a prime.

It is a super-2 number, since 2×7840843349² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7840843297 and 7840843306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7840843319) 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, 90287 + ... + 154380.

It is an arithmetic number, because the mean of its divisors is an integer number (995798760).

Almost surely, 2^7840843349 is an apocalyptic number.

It is an amenable number.

7840843349 is a deficient number, since it is larger than the sum of its proper divisors (125546731).

7840843349 is a wasteful number, since it uses less digits than its factorization.

7840843349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245179.

The product of its (nonzero) digits is 2322432, while the sum is 50.

The square root of 7840843349 is about 88548.5366846906. The cubic root of 7840843349 is about 1986.6480062427.

The spelling of 7840843349 in words is "seven billion, eight hundred forty million, eight hundred forty-three thousand, three hundred forty-nine".