144223444 has 12 divisors (see below), whose sum is σ = 267237684. Its totient is φ = 67869824.

The previous prime is 144223421. The next prime is 144223477. The reversal of 144223444 is 444322441.

It can be written as a sum of positive squares in 2 ways, for example, as 70056900 + 74166544 = 8370^2 + 8612^2 .

It is a super-2 number, since 2×144223444² = 41600803598442272, which contains 22 as substring.

It is a congruent number.

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, 1060399 + ... + 1060534.

It is an arithmetic number, because the mean of its divisors is an integer number (22269807).

Almost surely, 2^144223444 is an apocalyptic number.

It is an amenable number.

144223444 is a deficient number, since it is larger than the sum of its proper divisors (123014240).

144223444 is a wasteful number, since it uses less digits than its factorization.

144223444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120954 (or 2120952 counting only the distinct ones).

The product of its digits is 12288, while the sum is 28.

The square root of 144223444 is about 12009.3065578326. The cubic root of 144223444 is about 524.4192447288.

Adding to 144223444 its reverse (444322441), we get a palindrome (588545885).

The spelling of 144223444 in words is "one hundred forty-four million, two hundred twenty-three thousand, four hundred forty-four".