426447 has 18 divisors (see below), whose sum is σ = 717288. Its totient is φ = 243432.

The previous prime is 426427. The next prime is 426469. The reversal of 426447 is 744624.

It is not a de Polignac number, because 426447 - 2⁶ = 426383 is a prime.

It is a d-powerful number, because it can be written as 4 + 2¹⁷ + 4⁷ + 6² + 4⁹ + 7⁵ .

426447 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 426447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426407) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 43 + ... + 924.

2⁴²⁶⁴⁴⁷ is an apocalyptic number.

426447 is a deficient number, since it is larger than the sum of its proper divisors (290841).

426447 is a wasteful number, since it uses less digits than its factorization.

426447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987 (or 977 counting only the distinct ones).

The product of its digits is 5376, while the sum is 27.

The square root of 426447 is about 653.0290958296. The cubic root of 426447 is about 75.2699604522.

The spelling of 426447 in words is "four hundred twenty-six thousand, four hundred forty-seven".