6408943 has 4 divisors (see below), whose sum is σ = 6418008. Its totient is φ = 6399880.

The previous prime is 6408931. The next prime is 6408953. The reversal of 6408943 is 3498046.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3498046 = 2 ⋅1749023.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6408943 is a prime.

It is a super-3 number, since 3×6408943³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6408899 and 6408908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6408923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3373 + ... + 4918.

It is an arithmetic number, because the mean of its divisors is an integer number (1604502).

Almost surely, 2^6408943 is an apocalyptic number.

6408943 is a deficient number, since it is larger than the sum of its proper divisors (9065).

6408943 is an equidigital number, since it uses as much as digits as its factorization.

6408943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9064.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 6408943 is about 2531.5890266787. The cubic root of 6408943 is about 185.7499916976.

The spelling of 6408943 in words is "six million, four hundred eight thousand, nine hundred forty-three".