440230253 has 2 divisors, whose sum is σ = 440230254. Its totient is φ = 440230252.

The previous prime is 440230201. The next prime is 440230291. The reversal of 440230253 is 352032044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 378419209 + 61811044 = 19453^2 + 7862^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440230253 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440250253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220115126 + 220115127.

It is an arithmetic number, because the mean of its divisors is an integer number (220115127).

Almost surely, 2^440230253 is an apocalyptic number.

It is an amenable number.

440230253 is a deficient number, since it is larger than the sum of its proper divisors (1).

440230253 is an equidigital number, since it uses as much as digits as its factorization.

440230253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 440230253 is about 20981.6646861015. The cubic root of 440230253 is about 760.7231419274.

Adding to 440230253 its reverse (352032044), we get a palindrome (792262297).

The spelling of 440230253 in words is "four hundred forty million, two hundred thirty thousand, two hundred fifty-three".