444342133 has 4 divisors (see below), whose sum is σ = 455179788. Its totient is φ = 433504480.

The previous prime is 444342121. The next prime is 444342137. The reversal of 444342133 is 331243444.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 61826769 + 382515364 = 7863^2 + 19558^2 .

It is a de Polignac number, because none of the positive numbers 2^k-444342133 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 (444342137) 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, 5418766 + ... + 5418847.

It is an arithmetic number, because the mean of its divisors is an integer number (113794947).

Almost surely, 2^444342133 is an apocalyptic number.

It is an amenable number.

444342133 is a deficient number, since it is larger than the sum of its proper divisors (10837655).

444342133 is a wasteful number, since it uses less digits than its factorization.

444342133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10837654.

The product of its digits is 13824, while the sum is 28.

The square root of 444342133 is about 21079.4243991623. The cubic root of 444342133 is about 763.0842651911.

Adding to 444342133 its reverse (331243444), we get a palindrome (775585577).

The spelling of 444342133 in words is "four hundred forty-four million, three hundred forty-two thousand, one hundred thirty-three".