426644423 has 4 divisors (see below), whose sum is σ = 426979800. Its totient is φ = 426309048.

The previous prime is 426644389. The next prime is 426644453. The reversal of 426644423 is 324446624.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 426644423 - 2¹² = 426640327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426644453) 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, 165773 + ... + 168326.

It is an arithmetic number, because the mean of its divisors is an integer number (106744950).

Almost surely, 2^426644423 is an apocalyptic number.

426644423 is a deficient number, since it is larger than the sum of its proper divisors (335377).

426644423 is a wasteful number, since it uses less digits than its factorization.

426644423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335376.

The product of its digits is 110592, while the sum is 35.

The square root of 426644423 is about 20655.3727393141. The cubic root of 426644423 is about 752.8157403201.

The spelling of 426644423 in words is "four hundred twenty-six million, six hundred forty-four thousand, four hundred twenty-three".