1444422213 has 30 divisors (see below), whose sum is σ = 2336485074. Its totient is φ = 888866784.

The previous prime is 1444422209. The next prime is 1444422269. The reversal of 1444422213 is 3122244441.

1444422213 is a `hidden beast` number, since 1 + 4 + 4 + 442 + 2 + 213 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 3992004 + 1440430209 = 1998^2 + 37953^2 .

It is not a de Polignac number, because 1444422213 - 2² = 1444422209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444422293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 39070 + ... + 66447.

Almost surely, 2^1444422213 is an apocalyptic number.

1444422213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1444422213 is a deficient number, since it is larger than the sum of its proper divisors (892062861).

1444422213 is a wasteful number, since it uses less digits than its factorization.

1444422213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105555 (or 105533 counting only the distinct ones).

The product of its digits is 6144, while the sum is 27.

The square root of 1444422213 is about 38005.5550281798. Note that the first 3 decimals coincide. The cubic root of 1444422213 is about 1130.3980149599.

Adding to 1444422213 its reverse (3122244441), we get a palindrome (4566666654).

The spelling of 1444422213 in words is "one billion, four hundred forty-four million, four hundred twenty-two thousand, two hundred thirteen".