7881343 has 4 divisors (see below), whose sum is σ = 7893288. Its totient is φ = 7869400.

The previous prime is 7881337. The next prime is 7881373. The reversal of 7881343 is 3431887.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3431887 = 263 ⋅13049.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7881343 is a prime.

It is a Duffinian number.

7881343 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7881299 and 7881308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7881323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4921 + ... + 6322.

It is an arithmetic number, because the mean of its divisors is an integer number (1973322).

Almost surely, 2^7881343 is an apocalyptic number.

7881343 is a deficient number, since it is larger than the sum of its proper divisors (11945).

7881343 is a wasteful number, since it uses less digits than its factorization.

7881343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11944.

The product of its digits is 16128, while the sum is 34.

The square root of 7881343 is about 2807.3729713025. The cubic root of 7881343 is about 199.0062622711.

The spelling of 7881343 in words is "seven million, eight hundred eighty-one thousand, three hundred forty-three".