440424133 has 2 divisors, whose sum is σ = 440424134. Its totient is φ = 440424132.

The previous prime is 440424109. The next prime is 440424137. The reversal of 440424133 is 331424044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 430894564 + 9529569 = 20758^2 + 3087^2 .

It is a cyclic number.

It is not a de Polignac number, because 440424133 - 2²¹ = 438326981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 440424098 and 440424107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440424137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220212066 + 220212067.

It is an arithmetic number, because the mean of its divisors is an integer number (220212067).

Almost surely, 2^440424133 is an apocalyptic number.

It is an amenable number.

440424133 is a deficient number, since it is larger than the sum of its proper divisors (1).

440424133 is an equidigital number, since it uses as much as digits as its factorization.

440424133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 440424133 is about 20986.2844019612. The cubic root of 440424133 is about 760.8348011901.

Adding to 440424133 its reverse (331424044), we get a palindrome (771848177).

The spelling of 440424133 in words is "four hundred forty million, four hundred twenty-four thousand, one hundred thirty-three".