6444426 has 8 divisors (see below), whose sum is σ = 12888864. Its totient is φ = 2148140.

The previous prime is 6444413. The next prime is 6444437. The reversal of 6444426 is 6244446.

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

6444426 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6444393 and 6444402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537030 + ... + 537041.

It is an arithmetic number, because the mean of its divisors is an integer number (1611108).

Almost surely, 2^6444426 is an apocalyptic number.

6444426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6444426 is a wasteful number, since it uses less digits than its factorization.

6444426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074076.

The product of its digits is 18432, while the sum is 30.

The square root of 6444426 is about 2538.5874024741. The cubic root of 6444426 is about 186.0921615187.

The spelling of 6444426 in words is "six million, four hundred forty-four thousand, four hundred twenty-six".