6428943 has 8 divisors (see below), whose sum is σ = 9524400. Its totient is φ = 4285944.

The previous prime is 6428921. The next prime is 6428957. The reversal of 6428943 is 3498246.

It is a happy number.

6428943 is a `hidden beast` number, since 642 + 8 + 9 + 4 + 3 = 666.

It is not a de Polignac number, because 6428943 - 2⁶ = 6428879 is a prime.

6428943 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6428898 and 6428907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6428963) 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, 119028 + ... + 119081.

It is an arithmetic number, because the mean of its divisors is an integer number (1190550).

Almost surely, 2^6428943 is an apocalyptic number.

6428943 is a deficient number, since it is larger than the sum of its proper divisors (3095457).

6428943 is a wasteful number, since it uses less digits than its factorization.

6428943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238118 (or 238112 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 6428943 is about 2535.5360380006. The cubic root of 6428943 is about 185.9430106363.

The spelling of 6428943 in words is "six million, four hundred twenty-eight thousand, nine hundred forty-three".