1444244413 has 4 divisors (see below), whose sum is σ = 1453443580. Its totient is φ = 1435045248.

The previous prime is 1444244411. The next prime is 1444244443. The reversal of 1444244413 is 3144424441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3144424441 = 29 ⋅108428429.

It can be written as a sum of positive squares in 2 ways, for example, as 662650564 + 781593849 = 25742^2 + 27957^2 .

It is a cyclic number.

It is not a de Polignac number, because 1444244413 - 2¹ = 1444244411 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444244411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4599348 + ... + 4599661.

It is an arithmetic number, because the mean of its divisors is an integer number (363360895).

Almost surely, 2^1444244413 is an apocalyptic number.

It is an amenable number.

1444244413 is a deficient number, since it is larger than the sum of its proper divisors (9199167).

1444244413 is an equidigital number, since it uses as much as digits as its factorization.

1444244413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9199166.

The product of its digits is 24576, while the sum is 31.

The square root of 1444244413 is about 38003.2158244536. The cubic root of 1444244413 is about 1130.3516312427.

Adding to 1444244413 its reverse (3144424441), we get a palindrome (4588668854).

The spelling of 1444244413 in words is "one billion, four hundred forty-four million, two hundred forty-four thousand, four hundred thirteen".