4443426 has 48 divisors (see below), whose sum is σ = 10987704. Its totient is φ = 1285632.

The previous prime is 4443421. The next prime is 4443431. The reversal of 4443426 is 6243444.

It is an interprime number because it is at equal distance from previous prime (4443421) and next prime (4443431).

It can be written as a sum of positive squares in 4 ways, for example, as 2480625 + 1962801 = 1575^2 + 1401^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

Its product of digits (9216) is a multiple of the sum of its prime divisors (1152).

It is a nialpdrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 4443426.

It is not an unprimeable number, because it can be changed into a prime (4443421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3420 + ... + 4536.

Almost surely, 2^4443426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4443426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5493852).

4443426 is an abundant number, since it is smaller than the sum of its proper divisors (6544278).

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

4443426 is a wasteful number, since it uses less digits than its factorization.

4443426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155 (or 1152 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 4443426 is about 2107.9435476312. The cubic root of 4443426 is about 164.4015788294.

The spelling of 4443426 in words is "four million, four hundred forty-three thousand, four hundred twenty-six".