1423444445 has 8 divisors (see below), whose sum is σ = 1725743544. Its totient is φ = 1127015424.

The previous prime is 1423444441. The next prime is 1423444469. The reversal of 1423444445 is 5444443241.

It can be written as a sum of positive squares in 4 ways, for example, as 872356 + 1422572089 = 934^2 + 37717^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1423444445 - 2² = 1423444441 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 (1423444441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1466984 + ... + 1467953.

It is an arithmetic number, because the mean of its divisors is an integer number (215717943).

Almost surely, 2^1423444445 is an apocalyptic number.

It is an amenable number.

1423444445 is a deficient number, since it is larger than the sum of its proper divisors (302299099).

1423444445 is an equidigital number, since it uses as much as digits as its factorization.

1423444445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2935039.

The product of its digits is 122880, while the sum is 35.

The square root of 1423444445 is about 37728.5627211003. The cubic root of 1423444445 is about 1124.8989393992.

Adding to 1423444445 its reverse (5444443241), we get a palindrome (6867887686).

The spelling of 1423444445 in words is "one billion, four hundred twenty-three million, four hundred forty-four thousand, four hundred forty-five".