6443426 has 16 divisors (see below), whose sum is σ = 10644480. Its totient is φ = 2900880.

The previous prime is 6443417. The next prime is 6443429. The reversal of 6443426 is 6243446.

It is a happy number.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6443429) 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, 1055 + ... + 3741.

It is an arithmetic number, because the mean of its divisors is an integer number (665280).

Almost surely, 2^6443426 is an apocalyptic number.

6443426 is a deficient number, since it is larger than the sum of its proper divisors (4201054).

6443426 is a wasteful number, since it uses less digits than its factorization.

6443426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2809.

The product of its digits is 13824, while the sum is 29.

The square root of 6443426 is about 2538.3904349016. The cubic root of 6443426 is about 186.0825355366.

The spelling of 6443426 in words is "six million, four hundred forty-three thousand, four hundred twenty-six".