1423444 has 36 divisors (see below), whose sum is σ = 2915892. Its totient is φ = 605440.

The previous prime is 1423441. The next prime is 1423451. The reversal of 1423444 is 4443241.

It can be written as a sum of positive squares in 2 ways, for example, as 1210000 + 213444 = 1100^2 + 462^2 .

It is a super-2 number, since 2×1423444² = 4052385642272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8142 + ... + 8314.

It is an arithmetic number, because the mean of its divisors is an integer number (80997).

2^1423444 is an apocalyptic number.

It is an amenable number.

1423444 is an abundant number, since it is smaller than the sum of its proper divisors (1492448).

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

1423444 is a wasteful number, since it uses less digits than its factorization.

1423444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 203 counting only the distinct ones).

The product of its digits is 1536, while the sum is 22.

The square root of 1423444 is about 1193.0817239401. The cubic root of 1423444 is about 112.4898822176.

Adding to 1423444 its reverse (4443241), we get a palindrome (5866685).

The spelling of 1423444 in words is "one million, four hundred twenty-three thousand, four hundred forty-four".